pkgs/ds-lite-dhcpcd-hook: Netcologne can't handle Tunnel Encapsulation Limit, so don't send these options in the DS-Lite tunnel

flake.lock

@@ -666,11 +666,11 @@
     },
     "nixpkgs_5": {
       "locked": {
-        "lastModified": 1763283776,
-        "narHash": "sha256-Y7TDFPK4GlqrKrivOcsHG8xSGqQx3A6c+i7novT85Uk=",
+        "lastModified": 1761114652,
+        "narHash": "sha256-f/QCJM/YhrV/lavyCVz8iU3rlZun6d+dAiC3H+CDle4=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "50a96edd8d0db6cc8db57dab6bb6d6ee1f3dc49a",
+        "rev": "01f116e4df6a15f4ccdffb1bcd41096869fb385c",
         "type": "github"
       },
       "original": {

pkgs/ds-lite-dhcpcd-hook/ds-lite-dhcpcd-hook.sh

@@ -83,7 +83,7 @@ if TUNNEL_INTERFACE_CONFIG="$(ip --json link show "${TUNNEL_INTERFACE_NAME}")";
 	if [[ "${TUNNEL_INTERFACE_ORIGIN_ADDRESS}" != "${WAN_INTERFACE_ADDRESS}" || "${TUNNEL_INTERFACE_REMOTE_ADDRESS}" != "${AFTR_ADDRESS}" || "${TUNNEL_INTERFACE_OPERSTATE}" != "UNKNOWN" ]]; then
 		log_tunnel "Bad configuration, fixing tunnel parameter"
 
-		ip tunnel change "${TUNNEL_INTERFACE_NAME}" mode ipip6 local "${WAN_INTERFACE_ADDRESS}" remote "${AFTR_ADDRESS}"
+		ip tunnel change "${TUNNEL_INTERFACE_NAME}" mode ipip6 local "${WAN_INTERFACE_ADDRESS}" remote "${AFTR_ADDRESS}" encaplimit none
 		ip link set "$TUNNEL_INTERFACE_NAME" up
 	else
 		log_tunnel "Tunnel already configured"
@@ -91,7 +91,7 @@ if TUNNEL_INTERFACE_CONFIG="$(ip --json link show "${TUNNEL_INTERFACE_NAME}")";
 else
 	log_tunnel "Setting up DS-Lite tunnel"
 
-	ip tunnel add "${TUNNEL_INTERFACE_NAME}" mode ipip6 local "${WAN_INTERFACE_ADDRESS}" remote "${AFTR_ADDRESS}"
+	ip tunnel add "${TUNNEL_INTERFACE_NAME}" mode ipip6 local "${WAN_INTERFACE_ADDRESS}" remote "${AFTR_ADDRESS}" encaplimit none
 	ip link set "$TUNNEL_INTERFACE_NAME" up
 fi