On 11/03/14 08:16, Wolfgang S. Rupprecht wrote: > It looks like something broke recently that severely limits the MTU in > Fedora 20 when running under NM. Are other people seeing this too? > Here I'm pinging my upstream lan-to-wan gateway. A 1200 byte ping fails > while a 500 byte one succeeds. I see the same thing when pinging > between two identical, fully up-to-date f20 systems. > > wolfgang@arbol ~]$ ping -s 1200 gw > PING gw.wsrcc.com (192.168.35.1) 1200(1228) bytes of data. > ^C > --- gw.wsrcc.com ping statistics --- > 3 packets transmitted, 0 received, 100% packet loss, time 2000ms > > [wolfgang@arbol ~]$ ping -s 500 gw > PING gw.wsrcc.com (192.168.35.1) 500(528) bytes of data. > 508 bytes from gw.wsrcc.com (192.168.35.1): icmp_seq=1 ttl=64 time=0.503 ms > 508 bytes from gw.wsrcc.com (192.168.35.1): icmp_seq=2 ttl=64 time=0.460 ms > 508 bytes from gw.wsrcc.com (192.168.35.1): icmp_seq=3 ttl=64 time=0.456 ms > 508 bytes from gw.wsrcc.com (192.168.35.1): icmp_seq=4 ttl=64 time=0.454 ms > ^C > --- gw.wsrcc.com ping statistics --- > 4 packets transmitted, 4 received, 0% packet loss, time 3001ms > rtt min/avg/max/mdev = 0.454/0.468/0.503/0.025 ms > [wolfgang@arbol ~]$ [egreshko@meimei ~]$ ip link show p128p1 2: p128p1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP mode DEFAULT group default qlen 1000 [egreshko@meimei ~]$ ping -s 1200 wifi (my gw) PING wifi.greshko.com (192.168.1.1) 1200(1228) bytes of data. 1208 bytes from wifi.greshko.com (192.168.1.1): icmp_seq=1 ttl=64 time=0.487 ms 1208 bytes from wifi.greshko.com (192.168.1.1): icmp_seq=2 ttl=64 time=0.501 ms [egreshko@meimei ~]$ ping -s 7000 wifi PING wifi.greshko.com (192.168.1.1) 7000(7028) bytes of data. 7008 bytes from wifi.greshko.com (192.168.1.1): icmp_seq=1 ttl=64 time=0.563 ms 7008 bytes from wifi.greshko.com (192.168.1.1): icmp_seq=2 ttl=64 time=0.511 ms [egreshko@meimei ~]$ ping -s 500 wifi PING wifi.greshko.com (192.168.1.1) 500(528) bytes of data. 508 bytes from wifi.greshko.com (192.168.1.1): icmp_seq=1 ttl=64 time=0.423 ms 508 bytes from wifi.greshko.com (192.168.1.1): icmp_seq=2 ttl=64 time=0.458 ms So, no trouble here. Fully updated F20 system. -- If you can't laugh at yourself, others will gladly oblige. -- users mailing list users@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe or change subscription options: https://admin.fedoraproject.org/mailman/listinfo/users Fedora Code of Conduct: http://fedoraproject.org/code-of-conduct Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines Have a question? Ask away: http://ask.fedoraproject.org
