BMC is not reachable via IP/IP6 in wedge100 platform always!!!! ping fails!!!

[anwibrah]

im using a wedge 100 platform with following versions. Linux version 2.6.28.9 ([email protected]) (gcc version 4.9.2 (GCC) ) #1 Tue Apr 5 22:32:39 PDT 2016 CPU: ARM926EJ-S [41069265] revision 5 (ARMv5TEJ), cr=00053177 CPU: VIVT data cache, VIVT instruction cache Machine: AST2400.
Image Name: wedge100-image-wedge100-20160406. OpenBMC Release wedge100-v17.

BMC is not reachable from micro server always. ping fails randomly for around 50s and then it comes back up. Looks like an issue with resolving arps in OpenBmc. if i do a continous ping from BMC to microserver in another ssh terminal then i dont see this issue. any known issues ?

[anwibrah]

some logs. ping from my mac

ANWIBRAH-M-629A:wedge anwibrah$ ping 172.31.207.125 PING 172.31.207.125 (172.31.207.125): 56 data bytes 64 bytes from 172.31.207.125: icmp_seq=0 ttl=58 time=4.714 ms 64 bytes from 172.31.207.125: icmp_seq=1 ttl=58 time=4.153 ms 64 bytes from 172.31.207.125: icmp_seq=2 ttl=58 time=5.699 ms 64 bytes from 172.31.207.125: icmp_seq=3 ttl=58 time=8.307 ms 64 bytes from 172.31.207.125: icmp_seq=4 ttl=58 time=5.058 ms 64 bytes from 172.31.207.125: icmp_seq=5 ttl=58 time=3.628 ms 64 bytes from 172.31.207.125: icmp_seq=6 ttl=58 time=4.970 ms 64 bytes from 172.31.207.125: icmp_seq=7 ttl=58 time=4.413 ms 64 bytes from 172.31.207.125: icmp_seq=8 ttl=58 time=103.264 ms 64 bytes from 172.31.207.125: icmp_seq=9 ttl=58 time=4.233 ms 64 bytes from 172.31.207.125: icmp_seq=10 ttl=58 time=1.634 ms 64 bytes from 172.31.207.125: icmp_seq=11 ttl=58 time=2.070 ms 64 bytes from 172.31.207.125: icmp_seq=12 ttl=58 time=1.558 ms 64 bytes from 172.31.207.125: icmp_seq=13 ttl=58 time=3.981 ms 64 bytes from 172.31.207.125: icmp_seq=14 ttl=58 time=1.467 ms 64 bytes from 172.31.207.125: icmp_seq=15 ttl=58 time=4.371 ms 64 bytes from 172.31.207.125: icmp_seq=16 ttl=58 time=4.515 ms 64 bytes from 172.31.207.125: icmp_seq=17 ttl=58 time=1.875 ms 64 bytes from 172.31.207.125: icmp_seq=18 ttl=58 time=1.244 ms 64 bytes from 172.31.207.125: icmp_seq=19 ttl=58 time=2.435 ms 64 bytes from 172.31.207.125: icmp_seq=20 ttl=58 time=1.539 ms 64 bytes from 172.31.207.125: icmp_seq=21 ttl=58 time=4.448 ms 64 bytes from 172.31.207.125: icmp_seq=22 ttl=58 time=4.915 ms 64 bytes from 172.31.207.125: icmp_seq=23 ttl=58 time=1.673 ms 64 bytes from 172.31.207.125: icmp_seq=24 ttl=58 time=4.535 ms 64 bytes from 172.31.207.125: icmp_seq=25 ttl=58 time=4.509 ms 64 bytes from 172.31.207.125: icmp_seq=26 ttl=58 time=3.952 ms 64 bytes from 172.31.207.125: icmp_seq=27 ttl=58 time=34.443 ms 64 bytes from 172.31.207.125: icmp_seq=28 ttl=58 time=2.224 ms 64 bytes from 172.31.207.125: icmp_seq=29 ttl=58 time=5.324 ms 64 bytes from 172.31.207.125: icmp_seq=30 ttl=58 time=4.715 ms 64 bytes from 172.31.207.125: icmp_seq=31 ttl=58 time=6.265 ms 64 bytes from 172.31.207.125: icmp_seq=32 ttl=58 time=4.294 ms 64 bytes from 172.31.207.125: icmp_seq=33 ttl=58 time=6.293 ms Request timeout for icmp_seq 34 ---> broken Request timeout for icmp_seq 35 Request timeout for icmp_seq 36 Request timeout for icmp_seq 37 Request timeout for icmp_seq 38 Request timeout for icmp_seq 39 Request timeout for icmp_seq 40 Request timeout for icmp_seq 41 Request timeout for icmp_seq 42 Request timeout for icmp_seq 43 Request timeout for icmp_seq 44 Request timeout for icmp_seq 45 Request timeout for icmp_seq 46 Request timeout for icmp_seq 47 Request timeout for icmp_seq 48 Request timeout for icmp_seq 49 Request timeout for icmp_seq 50 Request timeout for icmp_seq 51 Request timeout for icmp_seq 52 Request timeout for icmp_seq 53 Request timeout for icmp_seq 54 Request timeout for icmp_seq 55 Request timeout for icmp_seq 56 Request timeout for icmp_seq 57 Request timeout for icmp_seq 58 Request timeout for icmp_seq 59 Request timeout for icmp_seq 60 Request timeout for icmp_seq 61 Request timeout for icmp_seq 62 64 bytes from 172.31.207.125: icmp_seq=63 ttl=58 time=2.551 ms 64 bytes from 172.31.207.125: icmp_seq=64 ttl=58 time=4.549 ms 64 bytes from 172.31.207.125: icmp_seq=65 ttl=58 time=4.940 ms 64 bytes from 172.31.207.125: icmp_seq=66 ttl=58 time=4.943 ms 64 bytes from 172.31.207.125: icmp_seq=67 ttl=58 time=7.129 ms 64 bytes from 172.31.207.125: icmp_seq=68 ttl=58 time=105.566 ms 64 bytes from 172.31.207.125: icmp_seq=69 ttl=58 time=5.865 ms 64 bytes from 172.31.207.125: icmp_seq=70 ttl=58 time=4.556 ms 64 bytes from 172.31.207.125: icmp_seq=71 ttl=58 time=1.814 ms 64 bytes from 172.31.207.125: icmp_seq=72 ttl=58 time=4.825 ms 64 bytes from 172.31.207.125: icmp_seq=73 ttl=58 time=4.452 ms 64 bytes from 172.31.207.125: icmp_seq=74 ttl=58 time=5.121 ms 64 bytes from 172.31.207.125: icmp_seq=75 ttl=58 time=5.792 ms 64 bytes from 172.31.207.125: icmp_seq=76 ttl=58 time=5.828 ms 64 bytes from 172.31.207.125: icmp_seq=77 ttl=58 time=1.926 ms 64 bytes from 172.31.207.125: icmp_seq=78 ttl=58 time=6.419 ms 64 bytes from 172.31.207.125: icmp_seq=79 ttl=58 time=4.125 ms 64 bytes from 172.31.207.125: icmp_seq=80 ttl=58 time=7.413 ms 64 bytes from 172.31.207.125: icmp_seq=81 ttl=58 time=5.527 ms 64 bytes from 172.31.207.125: icmp_seq=82 ttl=58 time=3.994 ms 64 bytes from 172.31.207.125: icmp_seq=83 ttl=58 time=7.937 ms 64 bytes from 172.31.207.125: icmp_seq=84 ttl=58 time=4.316 ms 64 bytes from 172.31.207.125: icmp_seq=85 ttl=58 time=1.405 ms 64 bytes from 172.31.207.125: icmp_seq=86 ttl=58 time=2.111 ms 64 bytes from 172.31.207.125: icmp_seq=87 ttl=58 time=5.792 ms 64 bytes from 172.31.207.125: icmp_seq=88 ttl=58 time=4.980 ms 64 bytes from 172.31.207.125: icmp_seq=89 ttl=58 time=1.792 ms 64 bytes from 172.31.207.125: icmp_seq=90 ttl=58 time=5.675 ms 64 bytes from 172.31.207.125: icmp_seq=91 ttl=58 time=1.581 ms 64 bytes from 172.31.207.125: icmp_seq=92 ttl=58 time=4.686 ms 64 bytes from 172.31.207.125: icmp_seq=93 ttl=58 time=2.821 ms Request timeout for icmp_seq 94 --> broken Request timeout for icmp_seq 95 Request timeout for icmp_seq 96 Request timeout for icmp_seq 97 Request timeout for icmp_seq 98 Request timeout for icmp_seq 99 Request timeout for icmp_seq 100 Request timeout for icmp_seq 101 Request timeout for icmp_seq 102 Request timeout for icmp_seq 103 Request timeout for icmp_seq 104 Request timeout for icmp_seq 105 64 bytes from 172.31.207.125: icmp_seq=106 ttl=58 time=4.487 ms 64 bytes from 172.31.207.125: icmp_seq=107 ttl=58 time=4.794 ms 64 bytes from 172.31.207.125: icmp_seq=108 ttl=58 time=12.207 ms 64 bytes from 172.31.207.125: icmp_seq=109 ttl=58 time=2.052 ms 64 bytes from 172.31.207.125: icmp_seq=110 ttl=58 time=1.365 ms 64 bytes from 172.31.207.125: icmp_seq=111 ttl=58 time=4.366 ms 64 bytes from 172.31.207.125: icmp_seq=112 ttl=58 time=4.196 ms 64 bytes from 172.31.207.125: icmp_seq=113 ttl=58 time=4.286 ms 64 bytes from 172.31.207.125: icmp_seq=114 ttl=58 time=4.464 ms 64 bytes from 172.31.207.125: icmp_seq=115 ttl=58 time=5.000 ms 64 bytes from

[covracer]

Does this reproduce on the 4.1 kernel in a build from the Helium branch?