Date: Mon, 25 Jan 2021 21:30:52 +0000 From: bugzilla-noreply@freebsd.org To: bugs@FreeBSD.org Subject: [Bug 253005] Received IPv6 RA message with plen !=64 in PIO is not processed. Message-ID: <bug-253005-227@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D253005 Bug ID: 253005 Summary: Received IPv6 RA message with plen !=3D64 in PIO is not processed. Product: Base System Version: 12.1-RELEASE Hardware: Any OS: Any Status: New Severity: Affects Only Me Priority: --- Component: kern Assignee: bugs@FreeBSD.org Reporter: dmytro@shytyi.net Overview: Received IPv6 prefix via Prefix Information Option in RA message is not processed (Even when presented code seems to have this ability). There is function "in6_ifadd()" referenced in the: source/netinet6/nd6_rtr.c Line: 1624 This function seems to allow configuration of the prefix and IID with length !=3D64. The code responsible for setting prefix and IID with length !=3D64 is prese= nted inline and below: source/netinet6/nd6_rtr.c Lines: 2233-2244 Actual Results: When FreeBSD receives an RA message with prefix len =3D=3D 80, no ipv6 addr= ess with plen =3D 80 is autoconfigured on the interfaces. Expected Results:=20 Ipv6 address with plen =3D=3D 80 autoconfigured on the interfaces. Code: 2232 /* make ifaddr */ 2233 in6_prepare_ifra(&ifra, &pr->ndpr_prefix.sin6_addr, &mask); 2234=20 2235 IN6_MASK_ADDR(&ifra.ifra_addr.sin6_addr, &mask); 2236 /* interface ID */ 2237 ifra.ifra_addr.sin6_addr.s6_addr32[0] |=3D 2238 (ib->ia_addr.sin6_addr.s6_addr32[0] & ~mask.s6_addr32[0]); 2239 ifra.ifra_addr.sin6_addr.s6_addr32[1] |=3D 2240 (ib->ia_addr.sin6_addr.s6_addr32[1] & ~mask.s6_addr32[1]); 2241 ifra.ifra_addr.sin6_addr.s6_addr32[2] |=3D 2242 (ib->ia_addr.sin6_addr.s6_addr32[2] & ~mask.s6_addr32[2]); 2243 ifra.ifra_addr.sin6_addr.s6_addr32[3] |=3D 2244 (ib->ia_addr.sin6_addr.s6_addr32[3] & ~mask.s6_addr32[3]); --=20 You are receiving this mail because: You are the assignee for the bug.=
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