On 2/8/19 8:38 AM, Peter Oskolkov wrote: > This patch builds on top of the previous patch in the patchset, > which added BPF_LWT_ENCAP_IP mode to bpf_lwt_push_encap. As the > encapping can result in the skb needing to go via a different > interface/route/dst, bpf programs can indicate this by returning > BPF_LWT_REROUTE, which triggers a new route lookup for the skb. > > v8 changes: fix kbuild errors when LWTUNNEL_BPF is builtin, but > IPV6 is a module: as LWTUNNEL_BPF can only be either Y or N, > call IPV6 routing functions only if they are built-in.
you need to use the ipv6 stub to access v6 functionality when it is a module.
