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opnsense-src/sys/net
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Mark Johnston d23b1ed810 if_ovpn: Support multihomed server configurations 
In UDP server mode, openvpn implements the "multihome" option, which
makes it avoid binding to an address.  Instead, the server socket is
bound to INADDR_ANY.

Today, when configuring a new peer and setting the source address,
sockaddr() returns the wildcard address, so the source address is
implicitly determined by the output interface.  This doesn't work as one
would want if the WAN interface has multiple addresses and clients
connect to non-primary addresses.

Make multihome mode work properly: use the local address supplied by
openvpn in preference to that of the socket.  We still fetch the port
number out of the socket.

PR:		273664
Reviewed by:	kp
MFC after:	1 month
Sponsored by:	Stormshield
Sponsored by:	Klara, Inc.
Differential Revision:	https://reviews.freebsd.org/D51498

(cherry picked from commit 05b5d56c540335ed17acf843810901338bf862d5)
2025-08-08 12:04:50 +02:00
..
altq altq: Stop checking for failures from malloc(M_WAITOK) 2024-09-30 12:44:15 +08:00
route routing: do not allow PINNED routes to be overriden 2025-03-18 12:09:33 +03:00
bpf.c bpf: Use static initializers 2025-03-13 18:13:50 +08:00
bpf.h bpf: Make bpf.h self-contained 2025-05-07 12:05:08 +00:00
bpf_buffer.c sys: Remove $FreeBSD$: one-line .c pattern 2023-08-16 11:54:36 -06:00
bpf_buffer.h sys: Remove $FreeBSD$: two-line .h pattern 2023-08-16 11:54:11 -06:00
bpf_filter.c sys: Remove $FreeBSD$: one-line .c pattern 2023-08-16 11:54:36 -06:00
bpf_jitter.c sys: Remove $FreeBSD$: one-line .c pattern 2023-08-16 11:54:36 -06:00
bpf_jitter.h sys: Remove $FreeBSD$: two-line .h pattern 2023-08-16 11:54:11 -06:00
bpf_zerocopy.c sys: Remove $FreeBSD$: one-line .c pattern 2023-08-16 11:54:36 -06:00
bpf_zerocopy.h sys: Remove $FreeBSD$: two-line .h pattern 2023-08-16 11:54:11 -06:00
bpfdesc.h sys: Remove $FreeBSD$: two-line .h pattern 2023-08-16 11:54:11 -06:00
bridgestp.c bridgestp: Use static initializers 2025-03-13 18:13:50 +08:00
bridgestp.h sys: Remove $FreeBSD$: two-line .h pattern 2023-08-16 11:54:11 -06:00
debugnet.c debugnet: Use precise types when accessing mbuf contents 2024-10-18 12:28:09 +00:00
debugnet.h sys: Remove $FreeBSD$: two-line .h pattern 2023-08-16 11:54:11 -06:00
debugnet_inet.c sys: Remove $FreeBSD$: one-line .c pattern 2023-08-16 11:54:36 -06:00
debugnet_int.h sys: Remove $FreeBSD$: two-line .h pattern 2023-08-16 11:54:11 -06:00
dlt.h sys: Remove $FreeBSD$: two-line .h pattern 2023-08-16 11:54:11 -06:00
ethernet.h sys/net: add a new ether_vlanid_t type 2025-07-09 10:05:42 +02:00
firewire.h sys: Remove $FreeBSD$: two-line .h pattern 2023-08-16 11:54:11 -06:00
ieee8023ad_lacp.c net: if_media for 1000Base-BX BiDi 2025-03-02 13:56:38 -07:00
ieee8023ad_lacp.h sys: Remove $FreeBSD$: two-line .h pattern 2023-08-16 11:54:11 -06:00
ieee_oui.h sys: Remove $FreeBSD$: two-line .h pattern 2023-08-16 11:54:11 -06:00
if.c ifnet: Eliminate unnecessary synchronization of the interface index in the link layer address 2025-07-09 10:05:52 +02:00
if.h ifnet: Add handling for toggling IFF_ALLMULTI in ifhwioctl() 2024-09-20 11:39:16 +00:00
if_arp.h Support ARP for 802 networks 2024-04-27 10:45:22 -04:00
if_bridge.c bridge: Remove a redundant assignment of if_type 2025-07-09 10:05:52 +02:00
if_bridgevar.h net/if_bridgevar.h: add include guard 2025-07-09 10:05:42 +02:00
if_clone.c if_clone: Use static initializers 2025-03-13 18:13:50 +08:00
if_clone.h if_clone: Use static initializers 2025-03-13 18:13:50 +08:00
if_dead.c sys: Remove $FreeBSD$: one-line .c pattern 2023-08-16 11:54:36 -06:00
if_disc.c net: Remove unneeded NULL check for the allocated ifnet 2024-07-12 20:03:37 +08:00
if_dl.h link_addr: be more strict about address formats 2025-07-09 10:05:44 +02:00
if_edsc.c net: Remove unneeded NULL check for the allocated ifnet 2024-07-12 20:03:37 +08:00
if_enc.c if_enc(4): Use new KPI to create enc interface 2024-10-20 21:43:01 +08:00
if_enc.h sys: Remove $FreeBSD$: two-line .h pattern 2023-08-16 11:54:11 -06:00
if_epair.c net: Remove unneeded NULL check for the allocated ifnet 2024-07-12 20:03:37 +08:00
if_ethersubr.c ethernet: Set maximum Ethernet header length based on the capability IFCAP_VLAN_MTU 2025-07-09 10:05:52 +02:00
if_fwsubr.c if_firewire: Make firewire_broadcastaddr static const 2025-07-09 10:05:51 +02:00
if_gif.c bpf: Make BPF interop consistent with if_loop 2024-05-08 09:06:15 -04:00
if_gif.h sys: Remove $FreeBSD$: one-line .c comment pattern 2023-08-16 11:54:24 -06:00
if_gre.c rss: add sysctl enable toggle 2025-07-09 10:05:48 +02:00
if_gre.h sys: Remove $FreeBSD$: one-line .h pattern 2023-08-16 11:54:18 -06:00
if_infiniband.c if_infininband: Support BPF write for broadcast frames 2025-03-02 16:41:29 -08:00
if_ipsec.c sys: Remove $FreeBSD$: one-line .c pattern 2023-08-16 11:54:36 -06:00
if_ipsec.h sys: Remove $FreeBSD$: two-line .h pattern 2023-08-16 11:54:11 -06:00
if_lagg.c lagg: Fix if_hw_tsomax_update() not being called 2025-07-28 10:16:11 +02:00
if_lagg.h sys: Remove $FreeBSD$: two-line .h pattern 2023-08-16 11:54:11 -06:00
if_llatbl.c if_llatbl: Fix a typo in a KASSERT message 2024-01-25 07:47:31 +01:00
if_llatbl.h sys: Remove $FreeBSD$: one-line .c pattern 2023-08-16 11:54:36 -06:00
if_llc.h sys: Remove $FreeBSD$: one-line .h pattern 2023-08-16 11:54:18 -06:00
if_loop.c net: Remove unneeded NULL check for the allocated ifnet 2024-07-12 20:03:37 +08:00
if_me.c bpf: Make BPF interop consistent with if_loop 2024-05-08 09:06:15 -04:00
if_media.c sys: Remove $FreeBSD$: one-line .c pattern 2023-08-16 11:54:36 -06:00
if_media.h net: if_media for 1000Base-BX BiDi 2025-03-02 13:56:38 -07:00
if_mib.c sys: Remove $FreeBSD$: two-line .h pattern 2023-08-16 11:54:11 -06:00
if_mib.h sys: Remove $FreeBSD$: two-line .h pattern 2023-08-16 11:54:11 -06:00
if_ovpn.c if_ovpn: Support multihomed server configurations 2025-08-08 12:04:50 +02:00
if_ovpn.h spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSD 2023-05-12 10:44:03 -06:00
if_pflog.h pflog: pass the action to pflog directly 2025-07-09 10:05:50 +02:00
if_pfsync.h sys: Remove $FreeBSD$: one-line .h pattern 2023-08-16 11:54:18 -06:00
if_private.h IfAPI: Hide the macros that touch ifnet members 2023-04-24 09:54:23 -04:00
if_stf.c net: Remove unneeded NULL check for the allocated ifnet 2024-07-12 20:03:37 +08:00
if_stf.h if_stf: make if_stf.h self-contained 2021-12-17 12:38:34 +01:00
if_strings.h ifnet: fix if_strings.h build check 2023-06-16 15:54:29 +00:00
if_tap.h sys: Remove $FreeBSD$: one-line .h pattern 2023-08-16 11:54:18 -06:00
if_tun.h sys: Remove $FreeBSD$: two-line .h pattern 2023-08-16 11:54:11 -06:00
if_tuntap.c Internal scheduling priorities: Always use symbolic ones 2025-07-31 12:42:21 +02:00
if_types.h sys: Remove $FreeBSD$: one-line .h pattern 2023-08-16 11:54:18 -06:00
if_var.h ifnet: Remove if_getamcount() 2024-09-20 11:39:16 +00:00
if_vlan.c if_vlan: Fix up if_type before attaching the interface 2025-07-09 10:05:52 +02:00
if_vlan_var.h if_vlan_var.h: fix value of DOT1Q_VID_MAX 2025-07-09 10:05:45 +02:00
if_vxlan.c if_vxlan(4): Prefer SYSCTL_INT over TUNABLE_INT 2025-02-03 20:24:10 +08:00
if_vxlan.h sys: Remove $FreeBSD$: two-line .h pattern 2023-08-16 11:54:11 -06:00
ifdi_if.m iflib: invert default restart on VLAN changes 2023-08-24 13:48:19 -07:00
iflib.c iflib: Some style(9) tweaks 2025-07-09 10:05:51 +02:00
iflib.h iflib(4): Replace admin taskqueue group with per-interface taskqueues 2025-04-27 16:02:58 -06:00
ifq.c IfAPI: Explicitly include <net/if_private.h> in netstack 2023-01-31 15:02:16 -05:00
ifq.h sys: Remove $FreeBSD$: one-line .h pattern 2023-08-16 11:54:18 -06:00
infiniband.h sys: Remove $FreeBSD$: two-line .h pattern 2023-08-16 11:54:11 -06:00
mp_ring.c sys: Remove $FreeBSD$: one-line .c pattern 2023-08-16 11:54:36 -06:00
mp_ring.h sys: Remove $FreeBSD$: two-line .h pattern 2023-08-16 11:54:11 -06:00
mppc.h sys: Remove $FreeBSD$: two-line .h pattern 2023-08-16 11:54:11 -06:00
mppcc.c sys: Remove $FreeBSD$: two-line .h pattern 2023-08-16 11:54:11 -06:00
mppcd.c sys: Remove $FreeBSD$: two-line .h pattern 2023-08-16 11:54:11 -06:00
netisr.c sys: Remove $FreeBSD$: one-line .c pattern 2023-08-16 11:54:36 -06:00
netisr.h sys: Remove $FreeBSD$: two-line .h pattern 2023-08-16 11:54:11 -06:00
netisr_internal.h sys: Remove $FreeBSD$: two-line .h pattern 2023-08-16 11:54:11 -06:00
netmap.h sys: Remove $FreeBSD$: one-line .h pattern 2023-08-16 11:54:18 -06:00
netmap_legacy.h sys: Remove $FreeBSD$: one-line .h pattern 2023-08-16 11:54:18 -06:00
netmap_user.h sys: Remove $FreeBSD$: one-line .h pattern 2023-08-16 11:54:18 -06:00
netmap_virt.h sys: Remove $FreeBSD$: two-line .h pattern 2023-08-16 11:54:11 -06:00
paravirt.h sys: Remove $FreeBSD$: one-line .h pattern 2023-08-16 11:54:18 -06:00
pfil.c pfil: PFIL_PASS never frees the mbuf 2025-07-09 10:05:50 +02:00
pfil.h sys: Remove $FreeBSD$: one-line .c comment pattern 2023-08-16 11:54:24 -06:00
pfkeyv2.h sys: Remove $FreeBSD$: one-line .c comment pattern 2023-08-16 11:54:24 -06:00
pfvar.h pf: backport changes around the following commit #242 2025-07-09 10:05:51 +02:00
ppp_defs.h sys: Remove $FreeBSD$: two-line .h pattern 2023-08-16 11:54:11 -06:00
radix.c sys: Remove $FreeBSD$: one-line .h pattern 2023-08-16 11:54:18 -06:00
radix.h sys: Remove $FreeBSD$: one-line .h pattern 2023-08-16 11:54:18 -06:00
rndis.h sys: Remove $FreeBSD$: one-line .c comment pattern 2023-08-16 11:54:24 -06:00
route.c sys: Remove $FreeBSD$: one-line .h pattern 2023-08-16 11:54:18 -06:00
route.h sys: Remove $FreeBSD$: one-line .h pattern 2023-08-16 11:54:18 -06:00
rss_config.c rss: add sysctl enable toggle 2025-07-09 10:05:48 +02:00
rss_config.h rss: add sysctl enable toggle 2025-07-09 10:05:48 +02:00
rtsock.c socket: Move SO_SETFIB handling to protocol layers 2025-02-21 01:04:50 +00:00
sff8436.h sys: Remove $FreeBSD$: two-line .h pattern 2023-08-16 11:54:11 -06:00
sff8472.h net/sff8472.h: add double-include protection 2025-07-09 10:05:42 +02:00
slcompress.c sys: Remove $FreeBSD$: one-line .h pattern 2023-08-16 11:54:18 -06:00
slcompress.h sys: Remove $FreeBSD$: one-line .h pattern 2023-08-16 11:54:18 -06:00
toeplitz.c sys: Remove $FreeBSD$: one-line .c pattern 2023-08-16 11:54:36 -06:00
toeplitz.h sys: Remove $FreeBSD$: two-line .h pattern 2023-08-16 11:54:11 -06:00
vnet.c vnet: Use static initializers 2025-03-13 18:13:51 +08:00
vnet.h sys: Remove $FreeBSD$: two-line .h pattern 2023-08-16 11:54:11 -06:00