5 May
2023
5 May
'23
4:13 p.m.
On 5/4/2023 9:52 AM, Sergei Antonov wrote:
On Sat, 22 Apr 2023 at 03:08,emohandesi@linux.microsoft.com wrote:
if (prefix->on_link && ntohl(prefix->valid_lifetime)) {net_prefix_length = prefix->prefix_len;net_gateway6 = ip6->saddr;return 0;Is it OK that prefix->prefix_len is used, but prefix->prefix is not? Just curious.
prefix->prefix is used just before this if statement to make sure it is not a link-local address as shown below.
if((ntohs(prefix->prefix.s6_addr16[0]) & IPV6_LINK_LOCAL_MASK) == IPV6_LINK_LOCAL_PREFIX) break; if(prefix->on_link && ntohl(prefix->valid_lifetime)) { net_prefix_length = prefix->prefix_len; net_gateway6 = ip6->saddr; return0; }