this is basically the same as what i did for in_pcbselsrc, and completely mechanical. im too tired to figure out if there's a smarter way to do it.
lightly tested, and more eyes are welcome because of the tiredness thing. Index: in6_pcb.c =================================================================== RCS file: /cvs/src/sys/netinet6/in6_pcb.c,v retrieving revision 1.117 diff -u -p -r1.117 in6_pcb.c --- in6_pcb.c 14 Apr 2022 14:10:22 -0000 1.117 +++ in6_pcb.c 15 May 2022 09:53:53 -0000 @@ -235,7 +235,7 @@ in6_pcbaddrisavail(struct inpcb *inp, st int in6_pcbconnect(struct inpcb *inp, struct mbuf *nam) { - struct in6_addr *in6a = NULL; + struct in6_addr in6a; struct sockaddr_in6 *sin6; int error; struct sockaddr_in6 tmp; @@ -273,7 +273,8 @@ in6_pcbconnect(struct inpcb *inp, struct inp->inp_ipv6.ip6_hlim = (u_int8_t)in6_selecthlim(inp); if (in6_pcbhashlookup(inp->inp_table, &sin6->sin6_addr, sin6->sin6_port, - IN6_IS_ADDR_UNSPECIFIED(&inp->inp_laddr6) ? in6a : &inp->inp_laddr6, + IN6_IS_ADDR_UNSPECIFIED(&inp->inp_laddr6) ? + &in6a : &inp->inp_laddr6, inp->inp_lport, inp->inp_rtableid) != NULL) { return (EADDRINUSE); } @@ -286,13 +287,13 @@ in6_pcbconnect(struct inpcb *inp, struct if (error) return (error); if (in6_pcbhashlookup(inp->inp_table, &sin6->sin6_addr, - sin6->sin6_port, in6a, inp->inp_lport, + sin6->sin6_port, &in6a, inp->inp_lport, inp->inp_rtableid) != NULL) { inp->inp_lport = 0; return (EADDRINUSE); } } - inp->inp_laddr6 = *in6a; + inp->inp_laddr6 = in6a; } inp->inp_faddr6 = sin6->sin6_addr; inp->inp_fport = sin6->sin6_port; Index: in6_src.c =================================================================== RCS file: /cvs/src/sys/netinet6/in6_src.c,v retrieving revision 1.86 diff -u -p -r1.86 in6_src.c --- in6_src.c 22 Feb 2022 01:15:02 -0000 1.86 +++ in6_src.c 15 May 2022 09:53:53 -0000 @@ -91,7 +91,7 @@ int in6_selectif(struct sockaddr_in6 *, * the values set at pcb level can be overridden via cmsg. */ int -in6_pcbselsrc(struct in6_addr **in6src, struct sockaddr_in6 *dstsock, +in6_pcbselsrc(struct in6_addr *in6src, struct sockaddr_in6 *dstsock, struct inpcb *inp, struct ip6_pktopts *opts) { struct ip6_moptions *mopts = inp->inp_moptions6; @@ -138,7 +138,7 @@ in6_pcbselsrc(struct in6_addr **in6src, pi->ipi6_addr = sa6.sin6_addr; /* XXX: this overrides pi */ - *in6src = &pi->ipi6_addr; + *in6src = pi->ipi6_addr; return (0); } @@ -147,7 +147,7 @@ in6_pcbselsrc(struct in6_addr **in6src, * is already bound, use the bound address. */ if (laddr && !IN6_IS_ADDR_UNSPECIFIED(laddr)) { - *in6src = laddr; + *in6src = *laddr; return (0); } @@ -167,7 +167,7 @@ in6_pcbselsrc(struct in6_addr **in6src, if (ia6 == NULL) return (EADDRNOTAVAIL); - *in6src = &ia6->ia_addr.sin6_addr; + *in6src = ia6->ia_addr.sin6_addr; return (0); } @@ -229,7 +229,7 @@ in6_pcbselsrc(struct in6_addr **in6src, struct ifaddr *ifa; if ((ifa = ifa_ifwithaddr(ip6_source, rtableid)) != NULL && ISSET(ifa->ifa_ifp->if_flags, IFF_UP)) { - *in6src = &satosin6(ip6_source)->sin6_addr; + *in6src = satosin6(ip6_source)->sin6_addr; return (0); } } @@ -238,7 +238,7 @@ in6_pcbselsrc(struct in6_addr **in6src, if (ia6 == NULL) return (EHOSTUNREACH); /* no route */ - *in6src = &ia6->ia_addr.sin6_addr; + *in6src = ia6->ia_addr.sin6_addr; return (0); } @@ -249,7 +249,7 @@ in6_pcbselsrc(struct in6_addr **in6src, * an entry to the caller for later use. */ int -in6_selectsrc(struct in6_addr **in6src, struct sockaddr_in6 *dstsock, +in6_selectsrc(struct in6_addr *in6src, struct sockaddr_in6 *dstsock, struct ip6_moptions *mopts, unsigned int rtableid) { struct ifnet *ifp = NULL; @@ -279,7 +279,7 @@ in6_selectsrc(struct in6_addr **in6src, if (ia6 == NULL) return (EADDRNOTAVAIL); - *in6src = &ia6->ia_addr.sin6_addr; + *in6src = ia6->ia_addr.sin6_addr; return (0); } @@ -303,7 +303,7 @@ in6_selectsrc(struct in6_addr **in6src, if (ia6 == NULL) return (EADDRNOTAVAIL); - *in6src = &ia6->ia_addr.sin6_addr; + *in6src = ia6->ia_addr.sin6_addr; return (0); } } Index: ip6_var.h =================================================================== RCS file: /cvs/src/sys/netinet6/ip6_var.h,v retrieving revision 1.92 diff -u -p -r1.92 ip6_var.h --- ip6_var.h 5 May 2022 13:57:41 -0000 1.92 +++ ip6_var.h 15 May 2022 09:53:53 -0000 @@ -355,9 +355,9 @@ int rip6_sysctl(int *, u_int, void *, si int dest6_input(struct mbuf **, int *, int, int); int none_input(struct mbuf **, int *, int); -int in6_pcbselsrc(struct in6_addr **, struct sockaddr_in6 *, +int in6_pcbselsrc(struct in6_addr *, struct sockaddr_in6 *, struct inpcb *, struct ip6_pktopts *); -int in6_selectsrc(struct in6_addr **, struct sockaddr_in6 *, +int in6_selectsrc(struct in6_addr *, struct sockaddr_in6 *, struct ip6_moptions *, unsigned int); struct rtentry *in6_selectroute(struct sockaddr_in6 *, struct ip6_pktopts *, struct route_in6 *, unsigned int rtableid); Index: raw_ip6.c =================================================================== RCS file: /cvs/src/sys/netinet6/raw_ip6.c,v retrieving revision 1.147 diff -u -p -r1.147 raw_ip6.c --- raw_ip6.c 23 Mar 2022 00:16:07 -0000 1.147 +++ raw_ip6.c 15 May 2022 09:53:53 -0000 @@ -423,15 +423,9 @@ rip6_output(struct mbuf *m, struct socke /* * Source address selection. */ - { - struct in6_addr *in6a; - - error = in6_pcbselsrc(&in6a, satosin6(dstaddr), in6p, optp); - if (error) - goto bad; - - ip6->ip6_src = *in6a; - } + error = in6_pcbselsrc(&ip6->ip6_src, satosin6(dstaddr), in6p, optp); + if (error) + goto bad; ip6->ip6_flow = in6p->inp_flowinfo & IPV6_FLOWINFO_MASK; ip6->ip6_vfc &= ~IPV6_VERSION_MASK; @@ -619,15 +613,15 @@ rip6_usrreq(struct socket *so, int req, case PRU_CONNECT: { struct sockaddr_in6 *addr; - struct in6_addr *in6a = NULL; if ((error = in6_nam2sin6(nam, &addr))) break; /* Source address selection. XXX: need pcblookup? */ - error = in6_pcbselsrc(&in6a, addr, in6p, in6p->inp_outputopts6); + error = in6_pcbselsrc(&in6p->inp_laddr6, addr, in6p, + in6p->inp_outputopts6); if (error) break; - in6p->inp_laddr6 = *in6a; + in6p->inp_faddr6 = addr->sin6_addr; soisconnected(so); break; Index: udp6_output.c =================================================================== RCS file: /cvs/src/sys/netinet6/udp6_output.c,v retrieving revision 1.59 diff -u -p -r1.59 udp6_output.c --- udp6_output.c 22 Feb 2022 01:35:41 -0000 1.59 +++ udp6_output.c 15 May 2022 09:53:53 -0000 @@ -101,7 +101,7 @@ udp6_output(struct inpcb *in6p, struct m int error = 0, priv = 0, hlen, flags; struct ip6_hdr *ip6; struct udphdr *udp6; - struct in6_addr *laddr, *faddr; + struct in6_addr laddr, *faddr; struct ip6_pktopts *optp, opt; struct sockaddr_in6 tmp, valid; struct proc *p = curproc; /* XXX */ @@ -159,8 +159,8 @@ udp6_output(struct inpcb *in6p, struct m } if (!IN6_IS_ADDR_UNSPECIFIED(&in6p->inp_laddr6) && - !IN6_ARE_ADDR_EQUAL(&in6p->inp_laddr6, laddr)) { - valid.sin6_addr = *laddr; + !IN6_ARE_ADDR_EQUAL(&in6p->inp_laddr6, &laddr)) { + valid.sin6_addr = laddr; valid.sin6_port = in6p->inp_lport; valid.sin6_scope_id = 0; valid.sin6_family = AF_INET6; @@ -174,7 +174,7 @@ udp6_output(struct inpcb *in6p, struct m error = ENOTCONN; goto release; } - laddr = &in6p->inp_laddr6; + laddr = in6p->inp_laddr6; faddr = &in6p->inp_faddr6; fport = in6p->inp_fport; } @@ -212,7 +212,7 @@ udp6_output(struct inpcb *in6p, struct m #endif ip6->ip6_nxt = IPPROTO_UDP; ip6->ip6_hlim = in6_selecthlim(in6p); - ip6->ip6_src = *laddr; + ip6->ip6_src = laddr; ip6->ip6_dst = *faddr; m->m_pkthdr.csum_flags |= M_UDP_CSUM_OUT;