1 Dec
2019
1 Dec
'19
12:43 p.m.
On Sun, Dec 1, 2019 at 12:57 PM Daniel Suchy <danny@danysek.cz> wrote:
One idea that comes in my mind is default kernel limit for IPv6 routes in memory (sysctl net.ipv6.route.max_size); and such default is quite low for fullbgp/DFZ IPv6 deployments and it's still set to 4096 on Debian/Buster with stock kernels. Can people having issues with 4.19 kernels check sysctl mentioned above?
This is our current suspicion too. neighbours and routes are well below 4096 in our case. We also had to adjust net.ipv6.neigh.default.gc_thresh1/2/3. Since the adjustment it's been working fine.