On 4/13/22 3:22 PM, Eric Dumazet wrote: > > On 4/13/22 07:34, Arun Ajith S wrote: >> Add a new neighbour cache entry in STALE state for routers on receiving >> an unsolicited (gratuitous) neighbour advertisement with >> target link-layer-address option specified. >> This is similar to the arp_accept configuration for IPv4. >> A new sysctl endpoint is created to turn on this behaviour: >> /proc/sys/net/ipv6/conf/interface/accept_unsolicited_na. > > > Do we really need to expose this to /proc/sys, for every interface added > in the host ? > > /proc files creations/deletion cost a lot in environments > adding/deleting netns very often. agree with the general intent (along with the increasing memory costs). I do think this case should be done as a /proc/sys entry for consistency with both ARP and existing related NA settings. > > I would prefer using NETLINK attributes, a single recvmsg() syscall can > fetch/set hundreds of them. What do you have in mind here? A link attribute managed through `ip link set`?
