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docs:guide-user:network:ucicheatsheet
Table of Contents
UCI networking options cheatsheet
This is a cheatsheet for quick lookup of networking UCI options, useful for experienced users.
Options valid for all protocol types
| Name | Type | Required | Default | Description |
|---|---|---|---|---|
ifname | interface name(s) | yes(*) | (none) | Physical interface name to assign to this section, list of interfaces if type bridge is set. (*) This option may be empty or missing if only a wireless interface references this network or if the protocol type is pptp, pppoa or 6in4 |
type | string | no | (none) | If set to “bridge”, a bridge containing the given ifnames is created As WLAN interface names may be dynamic or unpredictable, it is strongly recommended that they be assigned to bridges using the network option in UCI wireless configuration |
stp | boolean | no | 0 | Only valid for type “bridge”, enables the Spanning Tree Protocol |
bridge_empty | boolean | no | 0 | Only valid for type “bridge”, enables creating empty bridges |
igmp_snooping | boolean | no | 1 | Only valid for type “bridge”, sets the multicast_snooping kernel setting for a bridge |
macaddr | mac address | no | (none) | Override MAC address of this interface |
mtu | number | no | (none) | Override the default MTU on this interface |
auto | boolean | no | 0 for proto none, else 1 | Specifies whether to bring up interface on boot |
ipv6 | boolean | no | 1 | Specifies whether to enable (1) or disable (0) IPv6 on this interface (Barrier Breaker and later only) |
accept_ra | | | 1 for protocol dhcp, else 0 | |
send_rs | | | 1 for protocol static, else 0 | |
force_link | boolean | no | 1 for protocol static, else 0 | Specifies whether ip address, route, and optionally gateway are assigned to the interface regardless of the link being active ('1') or only after the link has become active ('0'); when set to '1', carrier sense events do not invoke hotplug handlers |
disabled | boolean | no | 0 | enable or disable the interface section |
ip4table | string | no | (none) | (ipv4) routing table for routes of this interface. E.g., when proto = dhcp, the dhcp client will add routes to that table |
ip6table | string | no | (none) | (ipv6) routing table for routes of this interface. E.g., when proto = dhcp6, the dhcp6 client will add routes to that table |
See wan_interface_protocols for documentation on the protocol-specific options available for each WAN protocol.
The options _orig_ifname and _orig_bridge may be seen in /etc/config/network when managed by LuCI and were used to keep previous information across edits. They were moved out of ''/etc/config/network'' in March, 2018.
Alias
| Name | Type | Required | Default | Description |
|---|---|---|---|---|
interface | string | yes | (none) | Specifies the logical interface name of the parent (or master) interface this alias belongs to; must refer to one of the defined interface sections |
proto | string | yes | (none) | Specifies the alias interface protocol |
ipaddr | ip address | yes, if no ip6addr is set | (none) | alias IP address |
netmask | netmask | yes, if no ip6addr is set | (none) | alias Netmask |
gateway | ip address | no | (none) | Default gateway |
broadcast | ip address | no | (none) | Broadcast address (autogenerated if not set) |
ip6addr | ipv6 address | yes, if no ipaddr is set | (none) | IPv6 address (CIDR notation) |
ip6gw | ipv6 address | no | (none) | IPv6 default gateway |
dns | list of ip addresses | no | (none) | DNS server(s) |
layer | integer | no | 3 | Selects the interface to attach to for stacked protocols (tun over bridge over eth, ppp over eth or similar). 3: attach to layer 3 interface (tun*, ppp* if parent is layer 3 else fallback to 2) 2: attach to layer 2 interface (br-* if parent is bridge else fallback to layer 1) 1: attach to layer 1 interface (eth*, wlan*) |
please check if this is still true or not: At the time of writing, only the static protocol type is allowed for aliases.
IP Rules (for both rule and rule6)
| Name | Type | Required | Default | Description |
|---|---|---|---|---|
in | string | no | (none) | Specifies the incoming logical interface name |
out | string | no | (none) | Specifies the outgoing logical interface name |
src | ip subnet | no | (none) | Specifies the source subnet to match (CIDR notation) |
dest | ip subnet | no | (none) | Specifies the destination subnet to match (CIDR notation) |
tos | integer | no | (none) | Specifies the TOS value to match in IP headers |
mark | mark/mask | no | (none) | Specifies the fwmark and optionally its mask to match, e.g. 0xFF to match mark 255 or 0x0/0x1 to match any even mark value |
invert | boolean | no | 0 | If set to 1, the meaning of the match options is inverted |
priority | integer | no | (incrementing) | Controls the order of the IP rules, by default the priority is auto-assigned so that they are processed in the same order they're declared in the config file |
lookup | routing table | at least one of | (none) | The rule target is a table lookup, the ID can be either a numeric table index ranging from 0 to 65535 or a symbolic alias declared in /etc/iproute2/rt_tables. The special aliases local (255), main (254) and default (253) are recognized as well |
goto | rule index | The rule target is a jump to another rule specified by its priority value |
||
action | string | The rule target is one of the routing actions outlined in the table below |
IPv4 Routes
| Name | Type | Required | Default | Description |
|---|---|---|---|---|
interface | string | yes | (none) | Specifies the logical interface name of the parent (or master) interface this route belongs to; must refer to one of the defined interface sections |
target | ip address | yes | (none) | Network address |
netmask | netmask | no | (none) | Route netmask. If omitted, 255.255.255.255 is assumed which makes target a host address |
gateway | ip address | no | (none) | Network gateway. If omitted, the gateway from the parent interface is taken; if set to 0.0.0.0 no gateway will be specified for the route |
metric | number | no | 0 | Specifies the route metric to use |
mtu | number | no | interface MTU | Defines a specific MTU for this route |
table | routing table | no | (none) | Defines the table ID to use for the route. The ID can be either a numeric table index ranging from 0 to 65535 or a symbolic alias declared in /etc/iproute2/rt_tables. The special aliases local (255), main (254) and default (253) are recognized as well |
source | ip address | no | (none) | The preferred source address when sending to destinations covered by the target |
onlink | boolean | no | 0 | When enabled gateway is on link even if the gateway does not match any interface prefix (Barrier Breaker and later only) |
type | string | no | unicast | One of the types outlined in the Routing Types table below (Barrier Breaker and later only) |
To disable a route quickly, the option enabled is not available. Just rewrite the route config section as disabled_route like:
config 'disabled_route' 'name_your_route'
...lines...
and it will be recognized by the uci parser but not applied by the /etc/init.d/network script.
It seems that on openwrt 12.09 if a route is defined using a gateway in an address space where a gateway is already defined, it will be not added. Like the lan has the gateway 192.168.1.1 and we want to go to 1.2.3.4 over the gateway 192.168.1.5 within the interface lan, it will not be added. Could be added through ip route commands tough.
IPv6 Routes
| Name | Type | Required | Default | Description |
|---|---|---|---|---|
interface | string | yes | (none) | Specifies the logical interface name of the parent (or master) interface this route belongs to; must refer to one of the defined interface sections |
target | ipv6 address | yes | (none) | IPv6 network address |
gateway | ipv6 address | no | (none) | IPv6 gateway. If omitted, the gateway from the parent interface is taken |
metric | number | no | 0 | Specifies the route metric to use |
mtu | number | no | interface MTU | Defines a specific MTU for this route |
table | routing table | no | (none) | Defines the table ID to use for the route. The ID can be either a numeric table index ranging from 0 to 65535 or a symbolic alias declared in /etc/iproute2/rt_tables. The special aliases local (255), main (254) and default (253) are recognized as well |
source | ip address | no | (none) | The preferred source address when sending to destinations covered by the target |
onlink | boolean | no | 0 | When enabled gateway is on link even if the gateway does not match any interface prefix (Barrier Breaker and later only) |
type | string | no | unicast | One of the types outlined in the Routing Types table below (Barrier Breaker and later only) |
Routing types
| Type | Description |
|---|---|
unicast | the route entry describes real paths to the destinations covered by the route prefix. |
local | the destinations are assigned to this host. The packets are looped back and delivered locally. |
broadcast | the destinations are broadcast addresses. The packets are sent as link broadcasts. |
multicast | a special type used for multicast routing. It is not present in normal routing tables. |
unreachable | these destinations are unreachable. Packets are discarded and the ICMP message host unreachable is generated. The local senders get an EHOSTUNREACH error. |
prohibit | these destinations are unreachable. Packets are discarded and the ICMP message communication administratively prohibited is generated. The local senders get an EACCES error. |
blackhole | these destinations are unreachable. Packets are discarded silently. The local senders get an EINVAL error. |
anycast | the destinations are anycast addresses assigned to this host. They are mainly equivalent to local with one difference: such addresses are invalid when used as the source address of any packet. |
Protocol 6in4 (IPv6-in-IPv4 Tunnel)
The package 6in4 must be installed to use this protocol.
| Name | Type | Required | Default | Description |
|---|---|---|---|---|
ipaddr | IPv4 address | no | Current WAN IPv4 address | Local IPv4 endpoint address |
peeraddr | IPv4 address | yes | (none) | Remote IPv4 endpoint address |
ip6addr | IPv6 address (CIDR) | yes | (none) | Local IPv6 address delegated to the tunnel endpoint |
ip6prefix | IPv6 prefix | no | (none) | Routed IPv6 prefix for downstream interfaces (Barrier Breaker and later only) |
sourcerouting | boolean | no | 1 | Whether to route only packets from delegated prefixes (Barrier Breaker and later only) |
defaultroute | boolean | no | 1 | Whether to create an IPv6 default route over the tunnel |
ttl | integer | no | 64 | TTL used for the tunnel interface |
tos | string | no | (none) | Type Of Service : either “inherit” (the outer header inherits the value of the inner header) or an hexadecimal value. Also known as DSCP. (Chaos Calmer and later only) |
mtu | integer | no | 1280 | MTU used for the tunnel interface |
tunnelid | integer | no | (none) | HE.net global tunnel ID (used for endpoint update) |
username | string | no | (none) | HE.net username which you use to login into tunnelbroker, not the User ID shows after you have login int (used for endpoint update) |
password | string | no | (none) | |
updatekey | string | no | (none) | HE.net updatekey, overrides password (used for endpoint update) |
metric | integer | no | 0 | Specifies the default route metric to use |
This protocol type does not need an ifname option set in the interface section. The interface name is derived from the section name, e.g. config interface sixbone would result in an interface named 6in4-sixbone.
HE.net has introduced updatekey as default for new tunnels in February 2014.
username, password and updatekey are all plaintext entries.
One of the ustream SSL Library variants (package libustream-*) should be installed for HE.net endpoint update to be performed over https. (optional for https: install packages ca-certificates and ca-bundle for server certificate validation.) Otherwise endpoint update will be performed over http.
although ip6prefix isn't required, sourcerouting, enabled by default, will prevent forwarding of packets unless ip6prefix is specified.
6rd tunnel (ISP-provided IPv6 transition)
Below configuration options are only needed for hardcoding the 6rd tunnel.
| Name | Type | Required | Default | Description |
|---|---|---|---|---|
peeraddr | IPv4 address | yes | no | 6rd - Gateway |
ipaddr | IPv4 address | no | Current WAN IPv4 address | Local IPv4 endpoint address |
ip6prefix | IPv6 prefix (without length) | yes | no | 6rd-IPv6 Prefix |
ip6prefixlen | IPv6 prefix length | yes | no | 6rd-IPv6 Prefix length |
ip4prefixlen | IPv6 prefix length | no | 0 | IPv4 common prefix |
defaultroute | boolean | no | 1 | Whether to create an IPv6 default route over the tunnel |
ttl | integer | no | 64 | TTL used for the tunnel interface |
tos | string | no | (none) | Type Of Service : either “inherit” (the outer header inherits the value of the inner header) or an hexadecimal value (Chaos Calmer and later only) |
mtu | integer | no | 1280 | MTU used for the tunnel interface |
iface6rd | logical interface | no | (none) | Logical interface template for auto-configuration of 6rd |
mtu6rd | integer | no | system default | MTU of the 6rd interface |
zone6rd | firewall zone | no | system default | Firewall zone to which the 6rd interface should be added |
This protocol type does not need an ifname option set in the interface section. The interface name is derived from the section name, e.g. config interface wan6 would result in an interface named 6rd-wan6.
Some ISP's give you the number of bytes you should use from your WAN IP to calculate your IPv6 address. ip4prefixlen expects the prefix bytes of your WAN IP to calculate the IPv6 address. So if your ISP gives you 14 bytes to calculate, enter 18 (32 - 14).
To debug 6rd via DHCP, first check if the parameters are sent. Create a /etc/udhcpc.user file with the following content:
#!/bin/sh env >> /tmp/udhcpc.log
Reboot the router and check the log file /tmp/udhcpc.log for the following line:
ip6rd=16 40 2001:0838:ad00:0000:0000:0000:0000:0000 77.174.0.2
If this line isn't present, you need to obtain the correct values for peeraddr, ip6prefix, ip6prefixlen and ip4prefixlen from your ISP. The above ip6rd or the obtained values can be used to hardcode the 6RD tunnel. Remove or comment out the iface6rd line in the wan section.
/etc/config/network
config interface 'wan6'
option proto '6rd'
option peeraddr '77.174.0.2'
option ip6prefix '2001:838:ad00::'
option ip6prefixlen '40'
option ip4prefixlen '16'
If you choose a name for your tunnel-interface that is different from 'wan6' make sure to add that name to the network-option of the firewall-zone 'wan' in /etc/config/firewall.
6pe, L2TP tunnel(ISP-provided IPv6 transition)
Most options are similar to protocol “ppp”.
| Name | Type | Required | Default | Description |
|---|---|---|---|---|
server | string | yes | (none) | L2TP server to connect to. Acceptable datatypes are hostname or IP address, with optional port separated by colon :. Note that specifying port is only supported recently and should appear in DD release |
username | string | no | (none) | Username for PAP/CHAP authentication |
password | string | yes if username is provided | (none) | Password for PAP/CHAP authentication |
ipv6 | bool | no | 0 | Enable IPv6 on the PPP link (IPv6CP) |
mtu | int | no | pppd default | Maximum Transmit/Receive Unit, in bytes |
keepalive | string | no | (none) | Number of unanswered echo requests before considering the peer dead. The interval between echo requests is 5 seconds. |
checkup_interval | int | no | (none) | Number of seconds to pass before checking if the interface is not up since the last setup attempt and retry the connection otherwise. Set it to a value sufficient for a successful L2TP connection for you. It's mainly for the case that netifd sent the connect request yet xl2tpd failed to complete it without the notice of netifd |
pppd_options | string | no | (none) | Additional options to pass to pppd |
The name of the physical interface will be “l2tp-<logical interface name>”.
Protocol 6to4 (IPv6-in-IPv4 Tunnel)
| Name | Type | Required | Default | Description |
|---|---|---|---|---|
ipaddr | IPv4 address | no | Current WAN IPv4 address | Local IPv4 endpoint address |
defaultroute | boolean | no | 1 | Whether to create an IPv6 default route over the tunnel |
ttl | integer | no | 64 | TTL used for the tunnel interface |
tos | string | no | (none) | Type Of Service : either “inherit” (the outer header inherits the value of the inner header) or an hexadecimal value |
mtu | integer | no | 1280 | MTU used for the tunnel interface |
metric | integer | no | 0 | Specifies the default route metric to use |
adv_interface | | | lan | deprecated |
adv_subnet | | | 1 | deprecated 1 and FFFF which selects the advertised /64 prefix from the mapped 6to4 space. The subnet ID is incremented by 1 for every interface specified in adv_interface. |
adv_valid_lifetime | | 300 | deprecated |
|
adv_preferred_lifetime | | | 120 | deprecated |
This protocol type does not need an ifname option set in the interface section. The interface name is derived from the section name, e.g. config interface wan6 would result in an interface named 6to4-wan6.
If radvd is installed and enabled, the 6to4 scripts will add a temporary prefix and interface declaration to the radvd uci configuration and perform a daemon restart if required. (deprecated)
Protocol dslite (Dual-Stack Lite)
| Name | Type | Required | Default | Description |
|---|---|---|---|---|
peeraddr | IPv6 address | yes | no | DS-Lite AFTR address |
ip6addr | IPv6 address | no | Current WAN IPv6 address | Local IPv6 endpoint address |
tunlink | Logical Interface | no | Current WAN interface | Tunnel base interface |
defaultroute | boolean | no | 1 | Whether to create an IPv6 default route over the tunnel |
ttl | integer | no | 64 | TTL used for the tunnel interface |
mtu | integer | no | 1280 | MTU used for the tunnel interface |
ds-lite operation requires that IPv4 NAT is disabled. You should adjust your settings in /etc/config/firewall accordingly.
This protocol type does not need an ifname option set in the interface section. The interface name is derived from the section name, e.g. config interface wan would result in an interface named dslite-wan.
config switch
| Option Name | Type | Required | Default | Impact | Notes |
|---|---|---|---|---|---|
name | string | yes | (none) | defines which switch to configure | |
reset | 0|1 | ||||
enable_vlan | 0|1 | ||||
enable_mirror_rx | 0|1 | no | 0 | Mirror received packets from the mirror_source_port to the mirror_monitor_port | |
enable_mirror_tx | 0|1 | no | 0 | Mirror transmitted packets from the mirror_source_port to the mirror_monitor_port | |
mirror_monitor_port | integer | no | 0 | Switch port to which packets are mirrored | |
mirror_source_port | integer | no | 0 | Switch port from which packets are mirrored | |
arl_age_time | integer | no | 300 | Adjust the address-resolution (MAC) table's aging time (seconds) | Default may differ by hardware |
igmp_snooping | 0|1 | no | 0 | Enable IGMP snooping | Unconfirmed if can be set. Unknown how it interacts with interface- or port-level IGMP snooping. |
igmp_v3 | 0|1 | no | 0 | Unconfirmed if can be set. Unknown how it interacts with interface- or port-level IGMP snooping. |
config switch_vlan
| Option Name | Type | Required | Default | Impact | Notes |
|---|---|---|---|---|---|
device | string | yes | (none) | defines which switch to configure | |
vlan | integer | yes | (none) | The vlan “table index” to configure | May be limited to 127 or another number. See the output of swconfig dev <dev> help for limit. Sets defaults for VLAN tag and PVID. |
vid | integer | no | vlan | The VLAN tag number to use | See the output of swconfig dev <dev> help for limit. VLANs 0 and 4095 are often considered “special use”. |
ports | string | yes | (none) | A string of space-separated port indicies that should be associated with the VLAN. Adding the suffix t to a port indicates that egress packets should be tagged, for example '0 1 3t 5t' | The suffixes * and u are referred to in docs:guide-user:network:switch with reference to certain Broadcom switches in the context of older releases. |
config switch_port
| Option Name | Type | Required | Default | Impact | Notes |
|---|---|---|---|---|---|
device | string | yes | (none) | defines which switch to configure | |
port | integer | yes | (none) | The port index to configure | |
pvid | integer | no | † | Port PVID; the VLAN tag†† to assign to untagged ingress packets | †Typically defaults one of the VLAN tags associated with the port. Logic not clear when there are multiple VLANs on the port. '0' can occur. Certain values have been rejected; logic not clear on limitations. ††May refer to the VLAN “index” rather than the VLAN tag itself (unconfirmed). |
enable_eee | 0|1 | no | 0 | Enable “energy saving” features | |
igmp_snooping | 0|1 | no | 0 | Enable IGMP snooping | Unconfirmed if can be set. Unknown how it interacts with interface- or switch-level IGMP snooping. |
igmp_v3 | 0|1 | no | 0 | Unconfirmed if can be set. Unknown how it interacts with interface- or switch-level IGMP snooping. |
docs/guide-user/network/ucicheatsheet.txt · Last modified: 2018/03/04 12:49 by bobafetthotmail
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