On Thu, Feb 10, 2022 at 11:32:05AM +0800, Hangbin Liu wrote:
> Some distros may enalbe rp_filter by default. After ns1 change addr to
> 10.0.2.99 and set default router to 10.0.2.1, while the connected router
> address is still 10.0.1.1. The router will not reply the arp request
> from ns1. Fix it by setting the router's veth0 rp_filter to 0.
>
> Before the fix:
> # ./nft_fib.sh
> PASS: fib expression did not cause unwanted packet drops
> Netns nsrouter-HQkDORO2 fib counter doesn't match expected packet count of 1 for 1.1.1.1
> table inet filter {
> chain prerouting {
> type filter hook prerouting priority filter; policy accept;
> ip daddr 1.1.1.1 fib saddr . iif oif missing counter packets 0 bytes 0 drop
> ip6 daddr 1c3::c01d fib saddr . iif oif missing counter packets 0 bytes 0 drop
> }
> }
>
> After the fix:
> # ./nft_fib.sh
> PASS: fib expression did not cause unwanted packet drops
> PASS: fib expression did drop packets for 1.1.1.1
> PASS: fib expression did drop packets for 1c3::c01d
Applied
