[][openwrt][mt7988][tops][prevent hnat bind UDP flow]

[Description]
Change HNAT binding flow.
HANT will not bind UDP flow for tunnel protocols since TOPS does not
support fragmentation yet. If PPE forward UDP packets that exceeds MTU,
it may cause network fail.

[Release-log]
N/A[

Change-Id: I7a86d51a3cebe39bd0d45b2d46fb5f0ed097b524
Reviewed-on: https://gerrit.mediatek.inc/c/openwrt/feeds/mtk_openwrt_feeds/+/7961425
1 file changed