rt0_hdr
addrs = ((struct rt0_hdr *)rthdr)->addr;
struct rt0_hdr *phdr, *ihdr;
ihdr = (struct rt0_hdr *) opt;
memcpy(phdr, ihdr, sizeof(struct rt0_hdr));
fl6->daddr = *((struct rt0_hdr *)opt->srcrt)->addr;
struct rt0_hdr *rthdr;
rthdr = (struct rt0_hdr *) hdr;
+ sizeof(struct rt0_hdr)
+ sizeof(struct rt0_hdr)
ptr + offsetof(struct rt0_hdr,