[OpenWrt Wiki] Tunneling interface protocols
openwrt.org › docs › guide-userDec 11, 2021 · Most OpenWrt protocol handlers add a protocol-specific prefix to the UCI interface names. There is a default 15-character limit for interface names in the Linux kernel. With prefixes seen at least as long as gre4t-and allowing possibility of using .VLAN notation, declared names should be kept under four (4) characters.
FS#1452 - [netifd] gretap instantiation ... - bugs.openwrt.org
bugs.openwrt.org › indexMar 27, 2018 · Add the following stanza to /etc/network/config (also occurs without force_link) config interface 'gt' option proto 'gretap' option ipaddr '192.168.1.1' option peeraddr '192.168.1.2' option force_link '1'. reboot. note that iw link does not show the link as even present. note that the logs indicate that the gt interface comes up and is ...
OpenWrt Forum Archive
https://forum.archive.openwrt.org/viewtopic.php?id=4877503.02.2014 · ip link add gre11 type gretap remote x.x.x.x . We observed that in ip_gre.c file, daddr is '0' and hence data is not sent of gretap interface. In iplink.c, we observed that there is a function to parse the parameters when the type is 'vlan'. But for gretap, we have not seen any code that parses the command line parameters