[openwrt/openwrt] firewall: change synflood_protect option name

[LEDE Commits]

hauke pushed a commit to openwrt/openwrt.git, branch openwrt-25.12:
https://git.openwrt.org/3d167c6b812223e0d7a9931348dcb349bd6c523a

commit 3d167c6b812223e0d7a9931348dcb349bd6c523a
Author: Hauke Mehrtens <hauke at hauke-m.de>
AuthorDate: Thu Jan 22 23:54:33 2026 +0100

    firewall: change synflood_protect option name
    
    The `syn_flood` option name is deprecated, `synflood_protect` should
    be used instead. firewall3 and firewall4 both support this option since
    a long time. LuCI already replaces the option name.
    https://github.com/openwrt/luci/commit/0abcb39b623f0eff0fbcdfb99fca8f3224701e86
    
    Suggested-by: rparge in OpenWrt forum
    Link: https://github.com/openwrt/openwrt/pull/21642
    Signed-off-by: Hauke Mehrtens <hauke at hauke-m.de>
    (cherry picked from commit 2ae350b72513fa09bb9a4a02ada94c19a247ced7)
---
 package/network/config/firewall/files/firewall.config | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/package/network/config/firewall/files/firewall.config b/package/network/config/firewall/files/firewall.config
index 6829e58ec1..a273059391 100644
--- a/package/network/config/firewall/files/firewall.config
+++ b/package/network/config/firewall/files/firewall.config
@@ -1,5 +1,5 @@
 config defaults
-	option syn_flood	1
+	option synflood_protect	1
 	option input		REJECT
 	option output		ACCEPT
 	option forward		REJECT