Hello Adam,
> Is it valid for RTM_F_CLONED to be set but ci to be NULL? If so, this
> changes the semantics: "cache" will no longer be printed if RTM_F_CLONED
> is set and ci is NULL.
In kernel code it seems to set RTM_F_CLONED and RTA_CACHEINFO
independently in net/ipv6/route.c:rt6_fill_node() (note: for IPv4 it
seems RTM_F_CLONED is set unconditionally), didn't dig further.
So, the code can be simplified even more, then (pseudocode):
if (RTM_F_CLONED) print("cache");
if (RTA_CACHEINFO) { ci=...; print("expires..."); }
Cheers,
Xabier Oneca_,,_
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