Symbol: BPF_F_NEXTHOP
net/core/filter.c
2456
BPF_F_NEXTHOP = (1ULL << 18),
net/core/filter.c
2457
#define BPF_F_REDIRECT_INTERNAL (BPF_F_NEIGH | BPF_F_PEER | BPF_F_NEXTHOP)