strongswan: DHCP on lo fixes backport

[lowjoel]

Fixes #25801. Adds the following commits to fix DHCP behaviour on Strongswan 5.9.14:

• strongswan/strongswan@abbf9d2
• strongswan/strongswan@00d8c36
• strongswan/strongswan@a50ed30

Maintainer: @pprindeville
Compile tested: aarch64 Linksys E8450 master
Run tested: aarch64 Linksys E8450 OpenWrt 24.10-rc6

Description:

Backports DHCP listening patches from Strongswan when the DHCP server is on lo. Please also backport this to OpenWrt 24.10 (23.05 is unaffected).

[lowjoel]

2025-02-01T02:00:35.4553648Z In file included from /builder/staging_dir/target-aarch64_generic_musl/usr/include/wolfssl/ssl.h:35,
2025-02-01T02:00:35.4554495Z                  from wolfssl_plugin.c:48:
2025-02-01T02:00:35.4555507Z /builder/staging_dir/target-aarch64_generic_musl/usr/include/wolfssl/error-ssl.h:56:5: error: redeclaration of enumerator 'PARSE_ERROR'
2025-02-01T02:00:35.4556594Z    56 |     PARSE_ERROR                  = -306,   /* parse error on header    */
2025-02-01T02:00:35.4557104Z       |     ^~~~~~~~~~~
2025-02-01T02:00:35.4557567Z In file included from ../../../../src/libstrongswan/utils/utils.h:59,
2025-02-01T02:00:35.4558186Z                  from ../../../../src/libstrongswan/library.h:102,
2025-02-01T02:00:35.4558669Z                  from wolfssl_common.h:28,
2025-02-01T02:00:35.4559091Z                  from wolfssl_plugin.c:24:
2025-02-01T02:00:35.4559940Z ../../../../src/libstrongswan/utils/utils/status.h:47:9: note: previous definition of 'PARSE_ERROR' with type 'enum status_t'
2025-02-01T02:00:35.4560789Z    47 |         PARSE_ERROR,
2025-02-01T02:00:35.4561363Z       |         ^~~~~~~~~~~

Hmm, not sure if this was introduced elsewhere in main?

[divinehawk]

2025-02-01T02:00:35.4560789Z    47 |         PARSE_ERROR,
2025-02-01T02:00:35.4561363Z       |         ^~~~~~~~~~~

Hmm, not sure if this was introduced elsewhere in main?

Wolfssl was updated to a newer version, requiring another backport. #25878

[lowjoel]

@Thermi sorry, would you also be able to review this please?