Error 132 (No buffer space available)

Hello all,

we had an issue today that caused OSPF to reset. Wondering what the actual cause was. It appears that the no buffer space available log entries pertain to IPv6 yet the IPv4 OSPF session is the one that reset.

A few log entries below. Entire issue lasted exactly 2 minutes and 9 seconds. This switch runs both OSPF and OSPF IPv6. But the OSPF IPv4 was the only one that reset. Also, this switch is actually 2 switches stacked. The OSPF link that was reset was between it and a Juniper MX router across a LACP bundle on te1/0/15 and 2/0/15 to the juniper.

<133> May 24 08:47:31 CORE-SW-STACK-1 OSAPI[ip6MapRadvdTask]: osapi_support.c(761) 49876182 %% NOTE Failed to send 56 byte message to ff02::1 on socket with fd 61 on interface Vl32. Error 132 (No buffer space available).
<133> May 24 08:47:25 CORE-SW-STACK-1 OSAPI[ip6MapRadvdTask]: osapi_support.c(761) 49876161 %% NOTE Failed to send 56 byte message to ff02::1 on socket with fd 61 on interface Vl32. Error 132 (No buffer space available).
<133> May 24 08:47:19 CORE-SW-STACK-1 OSAPI[ip6MapRadvdTask]: osapi_support.c(761) 49876148 %% NOTE Failed to send 56 byte message to ff02::1 on socket with fd 61 on interface Vl32. Error 132 (No buffer space available).
<133> May 24 08:47:13 CORE-SW-STACK-1 OSAPI[ip6MapRadvdTask]: osapi_support.c(761) 49876147 %% NOTE Failed to send 56 byte message to ff02::1 on socket with fd 61 on interface Vl747. Error 132 (No buffer space available).
<133> May 24 08:47:07 CORE-SW-STACK-1 OSAPI[ip6MapRadvdTask]: osapi_support.c(761) 49876146 %% NOTE Failed to send 56 byte message to ff02::1 on socket with fd 61 on interface Vl32. Error 132 (No buffer space available).
<134> May 24 08:47:05 CORE-SW-STACK-1 OSPF[procLOG]: spnbo.c(2737) 49876145 %% INFO [VRF ""]: OSPFv2 neighbor 10.20.30.19 on Vl32 moved from state FULL to state DOWN, on event InactivityTimer
<133> May 24 08:47:01 CORE-SW-STACK-1 OSAPI[ip6MapRadvdTask]: osapi_support.c(761) 49876144 %% NOTE Failed to send 56 byte message to ff02::1 on socket with fd 61 on interface Vl32. Error 132 (No buffer space available).