Re: can I used netlink to monitor changes to ARP table

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> 
> Hello!
> 
> > > 1. CONFIG_ARPD
> > > 2. echo 1 > /proc/sys/net/ipv4/neigh/<dev>/app_solicit
> > > 
> > > 
> > > After this arp changes are reported to group RTMGRP_NEIGH.
> 
> Not quite true, actually. It does not track expired entries.
> The absence of an entry is detected only after it is requested again.
> So, this thing is for user space resolution, not for monitoring.
> 
> The absense of facility to monitor ARP tables is intentional.
> Do you want to see what is there right now, dump. If you are not going
> to help with resolution, content of highly dynmaic table is of no use for you.
> 

Can you elaborate a little more ?
I'm not sure why routing table and arp table should be treated differently.
Each of the tables can have many  thousands entries and both of them can be
highly dynamic.

- Jacob
> Alexey
> 

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