Kyle Evans 1e9b8db9b2 ipv6: quit dropping packets looping back on p2p interfaces ... To paraphrase the below-referenced PR: This logic originated in the KAME project, and was even controversial when it was enabled there by default in 2001. No such equivalent logic exists in the IPv4 stack, and it turns out that this leads to us dropping valid traffic when the "point to point" interface is actually a 1:many tun interface, e.g. with the wireguard userland stack. Even in the case of true point-to-point links, this logic only avoids transient looping of packets sent by misconfigured applications or attackers, which can be subverted by proper route configuration rather than hardcoded logic in the kernel to drop packets. In the review, melifaro goes on to note that the kernel can't fix it, so it perhaps shouldn't try to be 'smart' about it. Additionally, that TTL will still kick in even with incorrect route configuration. PR: 247718 Reviewed by: melifaro, rgrimes MFC after: 1 week Differential Revision: https://reviews.freebsd.org/D25567		2020-08-31 01:45:48 +00:00
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dest6.c	Fix m_pullup() problem after removing PULLDOWN_TESTs and KAME EXT_*macros.	2019-12-01 00:22:04 +00:00
frag6.c	Mark more nodes as CTLFLAG_MPSAFE or CTLFLAG_NEEDGIANT (17 of many)	2020-02-26 14:26:36 +00:00
icmp6.c	Fix IPv6 regression introduced by r362900.	2020-07-03 08:06:26 +00:00
icmp6.h
in6_cksum.c
in6_fib.c	Move net/route/shared.h definitions to net/route/route_var.h.	2020-08-28 22:50:20 +00:00
in6_fib.h	Complete conversions from fib<4|6>_lookup_nh_<basic|ext> to fib<4|6>_lookup().	2020-07-02 21:04:08 +00:00
in6_gif.c	Switch gif(4) path verification to fib[46]_check_urfp().	2020-05-28 07:26:18 +00:00
in6_ifattach.c	Make sure the multicast release tasks are properly drained when	2020-08-10 10:46:08 +00:00
in6_ifattach.h
in6_jail.c	Move most of the contents of opt_compat.h to opt_global.h.	2018-04-06 17:35:35 +00:00
in6_mcast.c	Use a static initializer for the multicast free tasks.	2020-08-11 08:31:40 +00:00
in6_pcb.c	Allow TCP to reuse local port with different destinations	2020-05-18 22:53:12 +00:00
in6_pcb.h	Allow TCP to reuse local port with different destinations	2020-05-18 22:53:12 +00:00
in6_pcbgroup.c
in6_proto.c	Simplify dom_<rtattach|rtdetach>.	2020-08-14 21:29:56 +00:00
in6_rmx.c	Move net/route/shared.h definitions to net/route/route_var.h.	2020-08-28 22:50:20 +00:00
in6_rss.c
in6_rss.h
in6_src.c	Complete conversions from fib<4|6>_lookup_nh_<basic|ext> to fib<4|6>_lookup().	2020-07-02 21:04:08 +00:00
in6_var.h	Simplify dom_<rtattach|rtdetach>.	2020-08-14 21:29:56 +00:00
in6.c	Make net.inet6.ip6.deembed_scopeid behaviour default & remove sysctl.	2020-08-15 11:37:44 +00:00
in6.h	Convert route caching to nexthop caching.	2020-04-25 09:06:11 +00:00
ip6_ecn.h
ip6_fastfwd.c	Convert IP/IPv6 forwarding, ICMP processing and IP PCB laddr selection to	2020-04-14 23:06:25 +00:00
ip6_forward.c	ipv6: quit dropping packets looping back on p2p interfaces	2020-08-31 01:45:48 +00:00
ip6_gre.c	Introduce NET_EPOCH_CALL() macro and use it everywhere where we free	2020-01-15 06:05:20 +00:00
ip6_id.c	ip6_randomflowlabel: Avoid blocking if random(4) is not available	2019-04-23 17:18:20 +00:00
ip6_input.c	Mark more nodes as CTLFLAG_MPSAFE or CTLFLAG_NEEDGIANT (17 of many)	2020-02-26 14:26:36 +00:00
ip6_mroute.c	Mark more nodes as CTLFLAG_MPSAFE or CTLFLAG_NEEDGIANT (17 of many)	2020-02-26 14:26:36 +00:00
ip6_mroute.h
ip6_output.c	ip6_output(): Check the return value of in6_getlinkifnet().	2020-07-30 17:43:23 +00:00
ip6_var.h	Convert route caching to nexthop caching.	2020-04-25 09:06:11 +00:00
ip6.h
ip6protosw.h
ip_fw_nat64.h	Reapply r345274 with build fixes for 32-bit architectures.	2019-03-19 10:57:03 +00:00
ip_fw_nptv6.h	Add ability to use dynamic external prefix in ipfw_nptv6 module.	2018-11-12 11:20:59 +00:00
mld6_var.h	icmpv6: Fix mbuf change in mld	2019-11-18 21:59:47 +00:00
mld6.c	mld6: initialize oifp to avoid bogus results/panics in edge cases	2020-02-28 11:16:41 +00:00
mld6.h
nd6_nbr.c	Remove RADIX_MPATH headers, they were unused since r293159.	2020-04-11 07:56:11 +00:00
nd6_rtr.c	Transition from rtrequest1_fib() to rib_action().	2020-07-21 19:56:13 +00:00
nd6.c	Transition from rtrequest1_fib() to rib_action().	2020-07-21 19:56:13 +00:00
nd6.h	Switch inet6 default route subscription to the new rib subscription api.	2020-07-12 11:24:23 +00:00
pim6_var.h	Rework IP encapsulation handling code.	2018-06-05 20:51:01 +00:00
pim6.h
raw_ip6.c	Make ip6_output() and ip_output() require network epoch.	2020-01-22 05:51:22 +00:00
raw_ip6.h
route6.c	Fix m_pullup() problem after removing PULLDOWN_TESTs and KAME EXT_*macros.	2019-12-01 00:22:04 +00:00
scope6_var.h	Make net.inet6.ip6.deembed_scopeid behaviour default & remove sysctl.	2020-08-15 11:37:44 +00:00
scope6.c	Make net.inet6.ip6.deembed_scopeid behaviour default & remove sysctl.	2020-08-15 11:37:44 +00:00
sctp6_usrreq.c	Retire SCTP_SO_LOCK_TESTING.	2020-06-07 14:39:20 +00:00
sctp6_var.h	Whitespace changes due to changes in ident.	2018-07-19 20:16:33 +00:00
send.c	Use the new VNET_DEFINE_STATIC macro when we are defining static VNET	2018-07-24 16:35:52 +00:00
send.h
tcp6_var.h	Remove tcp_rtlookup6() function signature.	2020-04-13 08:26:11 +00:00
udp6_usrreq.c	IPV6_PKTINFO support for v4-mapped IPv6 sockets	2020-08-07 15:13:53 +00:00
udp6_var.h