tmchow Posted April 2, 2016 Share Posted April 2, 2016 I was experimenting with trying to get jumbo frames to work on my network but realized it wasn't going to help me much since my main desktop PC that I connect to my Unraid server with is communicating over 802.11ac wifi. So I reverted the MTU changes. One thing I noticed today was that the network interfaces for the docker containers (at least that's what I think they are) show an MTU of 9014, but eth0 is back at 1500. Not sure if this is because docker was enabled when I had the MTU changed to 9014 I'm assuming that they should all match. Is it just a matter of restarting the docker daemon or something else? here is output from ifconfig. Notice eth0 is MTU=1500, and most everything else is MTU=9014. root@Tower:/boot/config# ifconfig as0t0: flags=4305<UP,POINTOPOINT,RUNNING,NOARP,MULTICAST> mtu 1500 inet 172.27.224.1 netmask 255.255.255.0 destination 172.27.224.1 unspec 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00 txqueuelen 200 (UNSPEC) RX packets 0 bytes 0 (0.0 B) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 0 bytes 0 (0.0 B) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 as0t1: flags=4305<UP,POINTOPOINT,RUNNING,NOARP,MULTICAST> mtu 1500 inet 172.27.225.1 netmask 255.255.255.0 destination 172.27.225.1 unspec 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00 txqueuelen 200 (UNSPEC) RX packets 0 bytes 0 (0.0 B) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 0 bytes 0 (0.0 B) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 as0t2: flags=4305<UP,POINTOPOINT,RUNNING,NOARP,MULTICAST> mtu 1500 inet 172.27.226.1 netmask 255.255.255.0 destination 172.27.226.1 unspec 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00 txqueuelen 200 (UNSPEC) RX packets 0 bytes 0 (0.0 B) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 0 bytes 0 (0.0 B) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 as0t3: flags=4305<UP,POINTOPOINT,RUNNING,NOARP,MULTICAST> mtu 1500 inet 172.27.227.1 netmask 255.255.255.0 destination 172.27.227.1 unspec 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00 txqueuelen 200 (UNSPEC) RX packets 0 bytes 0 (0.0 B) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 0 bytes 0 (0.0 B) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 as0t4: flags=4305<UP,POINTOPOINT,RUNNING,NOARP,MULTICAST> mtu 1500 inet 172.27.228.1 netmask 255.255.255.0 destination 172.27.228.1 unspec 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00 txqueuelen 200 (UNSPEC) RX packets 0 bytes 0 (0.0 B) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 0 bytes 0 (0.0 B) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 as0t5: flags=4305<UP,POINTOPOINT,RUNNING,NOARP,MULTICAST> mtu 1500 inet 172.27.229.1 netmask 255.255.255.0 destination 172.27.229.1 unspec 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00 txqueuelen 200 (UNSPEC) RX packets 0 bytes 0 (0.0 B) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 0 bytes 0 (0.0 B) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 as0t6: flags=4305<UP,POINTOPOINT,RUNNING,NOARP,MULTICAST> mtu 1500 inet 172.27.230.1 netmask 255.255.255.0 destination 172.27.230.1 unspec 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00 txqueuelen 200 (UNSPEC) RX packets 0 bytes 0 (0.0 B) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 0 bytes 0 (0.0 B) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 as0t7: flags=4305<UP,POINTOPOINT,RUNNING,NOARP,MULTICAST> mtu 1500 inet 172.27.231.1 netmask 255.255.255.0 destination 172.27.231.1 unspec 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00 txqueuelen 200 (UNSPEC) RX packets 0 bytes 0 (0.0 B) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 0 bytes 0 (0.0 B) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 as0t8: flags=4305<UP,POINTOPOINT,RUNNING,NOARP,MULTICAST> mtu 1500 inet 172.27.232.1 netmask 255.255.255.0 destination 172.27.232.1 unspec 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00 txqueuelen 200 (UNSPEC) RX packets 0 bytes 0 (0.0 B) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 0 bytes 0 (0.0 B) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 as0t9: flags=4305<UP,POINTOPOINT,RUNNING,NOARP,MULTICAST> mtu 1500 inet 172.27.233.1 netmask 255.255.255.0 destination 172.27.233.1 unspec 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00 txqueuelen 200 (UNSPEC) RX packets 0 bytes 0 (0.0 B) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 0 bytes 0 (0.0 B) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 as0t10: flags=4305<UP,POINTOPOINT,RUNNING,NOARP,MULTICAST> mtu 1500 inet 172.27.234.1 netmask 255.255.255.0 destination 172.27.234.1 unspec 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00 txqueuelen 200 (UNSPEC) RX packets 0 bytes 0 (0.0 B) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 0 bytes 0 (0.0 B) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 as0t11: flags=4305<UP,POINTOPOINT,RUNNING,NOARP,MULTICAST> mtu 1500 inet 172.27.235.1 netmask 255.255.255.0 destination 172.27.235.1 unspec 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00 txqueuelen 200 (UNSPEC) RX packets 0 bytes 0 (0.0 B) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 0 bytes 0 (0.0 B) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 as0t12: flags=4305<UP,POINTOPOINT,RUNNING,NOARP,MULTICAST> mtu 1500 inet 172.27.236.1 netmask 255.255.255.0 destination 172.27.236.1 unspec 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00 txqueuelen 200 (UNSPEC) RX packets 0 bytes 0 (0.0 B) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 0 bytes 0 (0.0 B) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 as0t13: flags=4305<UP,POINTOPOINT,RUNNING,NOARP,MULTICAST> mtu 1500 inet 172.27.237.1 netmask 255.255.255.0 destination 172.27.237.1 unspec 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00 txqueuelen 200 (UNSPEC) RX packets 0 bytes 0 (0.0 B) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 0 bytes 0 (0.0 B) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 as0t14: flags=4305<UP,POINTOPOINT,RUNNING,NOARP,MULTICAST> mtu 1500 inet 172.27.238.1 netmask 255.255.255.0 destination 172.27.238.1 unspec 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00 txqueuelen 200 (UNSPEC) RX packets 0 bytes 0 (0.0 B) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 0 bytes 0 (0.0 B) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 as0t15: flags=4305<UP,POINTOPOINT,RUNNING,NOARP,MULTICAST> mtu 1500 inet 172.27.239.1 netmask 255.255.255.0 destination 172.27.239.1 unspec 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00 txqueuelen 200 (UNSPEC) RX packets 0 bytes 0 (0.0 B) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 0 bytes 0 (0.0 B) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 docker0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 9014 inet 172.17.42.1 netmask 255.255.0.0 broadcast 0.0.0.0 ether 06:8b:76:b7:f5:0d txqueuelen 0 (Ethernet) RX packets 32463330 bytes 4724517316 (4.4 GiB) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 42074423 bytes 150142060462 (139.8 GiB) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500 inet 192.168.1.161 netmask 255.255.255.0 broadcast 192.168.1.255 ether d0:50:99:6f:f8:dc txqueuelen 1000 (Ethernet) RX packets 3737745349 bytes 5543995151653 (5.0 TiB) RX errors 0 dropped 47225 overruns 1 frame 0 TX packets 457213270 bytes 89063610077 (82.9 GiB) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 device memory 0xf7400000-f747ffff lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536 inet 127.0.0.1 netmask 255.0.0.0 loop txqueuelen 0 (Local Loopback) RX packets 3029127 bytes 1572045339 (1.4 GiB) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 3029127 bytes 1572045339 (1.4 GiB) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 veth3cc4ce6: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 9014 ether c6:9b:37:c4:da:b5 txqueuelen 0 (Ethernet) RX packets 22111 bytes 13578262 (12.9 MiB) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 312458 bytes 49262154 (46.9 MiB) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 veth4570d1e: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 9014 ether 06:8b:76:b7:f5:0d txqueuelen 0 (Ethernet) RX packets 3843 bytes 264600 (258.3 KiB) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 190471 bytes 47993673 (45.7 MiB) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 veth4ee1280: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 9014 ether e6:11:7b:bf:1f:12 txqueuelen 0 (Ethernet) RX packets 12633206 bytes 3284798965 (3.0 GiB) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 17592166 bytes 40794143395 (37.9 GiB) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 vethd0c48d5: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 9014 ether ba:6e:7b:b5:70:e6 txqueuelen 0 (Ethernet) RX packets 390846 bytes 153011784 (145.9 MiB) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 674410 bytes 302327780 (288.3 MiB) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 vethdf28aad: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 9014 ether 7a:cf:b8:35:d9:bc txqueuelen 0 (Ethernet) RX packets 19346524 bytes 1682816930 (1.5 GiB) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 24152100 bytes 108135357168 (100.7 GiB) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 vetheff27f9: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 9014 ether 9e:f7:e6:5c:0f:fd txqueuelen 0 (Ethernet) RX packets 2519 bytes 560959 (547.8 KiB) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 167224 bytes 36699419 (34.9 MiB) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 Link to comment
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