On Thu, 2018-12-06 at 20:43 +0100, Andrew Lunn wrote: > CAUTION: This email originated from outside of the organization. Do not click > links or open attachments unless you recognize the sender and know the > content is safe. > > > > I can have a look at using dormant, but what is change_carrier > > supposed to do if not this? > > It is intended for interfaces which are stacked, like the team driver, > and for devices which don't have a phy, e.g. tun, and dummy. > > > I didn't find a tool for DORMANT, I guess i will have to write one > > myself(using SIOCGIFFLAGS, SIOCSIFFLAGS)? > > ip link should be able to set it. > > Try ip link set mode dormant dev eth0 > > Andrew
Been a bit busy today but now I have played with dormant using ip link and got some odd results: # > ifconfig eth0 eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500 inet 172.20.0.246 netmask 255.255.0.0 broadcast 172.20.255.255 inet6 fe80::ad9c:b230:1da8:1821 prefixlen 64 scopeid 0x20<link> ether 8c:16:45:89:cf:c6 txqueuelen 1000 (Ethernet) RX packets 1848903 bytes 736764445 (702.6 MiB) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 627462 bytes 222453345 (212.1 MiB) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 device interrupt 16 memory 0xdc200000-dc220000 # > ip link set mode dormant dev eth0 ping sunet.se PING sunet.se (192.36.171.231) 56(84) bytes of data. 64 bytes from webc.sunet.se (192.36.171.231): icmp_seq=1 ttl=54 time=2.22 ms 64 bytes from webc.sunet.se (192.36.171.231): icmp_seq=2 ttl=54 time=2.17 ms # > ifconfig eth0 eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500 inet 172.20.0.246 netmask 255.255.0.0 broadcast 172.20.255.255 inet6 fe80::ad9c:b230:1da8:1821 prefixlen 64 scopeid 0x20<link> ether 8c:16:45:89:cf:c6 txqueuelen 1000 (Ethernet) RX packets 1905479 bytes 753549572 (718.6 MiB) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 648266 bytes 224421617 (214.0 MiB) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 device interrupt 16 memory 0xdc200000-dc220000 still RUNNING .. #> ip link show eth0 5: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP mode DORMANT group default qlen state is still UP ? # > ip link set state dormant dev eth0 # > ip link show eth0 5: eth0: <NO-CARRIER,BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state DORMANT mode DORMANT group default qlen 1000 # > ifconfig eth0 eth0: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500 ... Now both state and not RUNNING :) but ... # ping sunet.se PING sunet.se (192.36.171.231) 56(84) bytes of data. 64 bytes from webc.sunet.se (192.36.171.231): icmp_seq=1 ttl=54 time=2.43 ms 64 bytes from webc.sunet.se (192.36.171.231): icmp_seq=2 ttl=54 time=2.31 ms I can still ping though. Is this how it is supposed to work ? No sure how state and mode relate to each other either. Jocke