[PATCH iptables] ip[6]tables-translate: fix test failures when WESP is defined

[Jeremy Sowden <jeremy@xxxxxxxxxx>]

Protocol number 141 is assigned to a real protocol: Wrapped Encapsulating
Security Payload.  This is listed in Debian's /etc/protocols, which leads to
test failures:

  ./extensions/generic.txlate: Fail
  src: iptables-translate -A FORWARD -p 141
  exp: nft 'add rule ip filter FORWARD ip protocol 141 counter'
  res: nft 'add rule ip filter FORWARD ip protocol wesp counter'

  ./extensions/generic.txlate: Fail
  src: ip6tables-translate -A FORWARD -p 141
  exp: nft 'add rule ip6 filter FORWARD meta l4proto 141 counter'
  res: nft 'add rule ip6 filter FORWARD meta l4proto wesp counter'

  ./extensions/generic.txlate: Fail
  src: iptables-translate -A FORWARD ! -p 141
  exp: nft 'add rule ip filter FORWARD ip protocol != 141 counter'
  res: nft 'add rule ip filter FORWARD ip protocol != wesp counter'

  ./extensions/generic.txlate: Fail
  src: ip6tables-translate -A FORWARD ! -p 141
  exp: nft 'add rule ip6 filter FORWARD meta l4proto != 141 counter'
  res: nft 'add rule ip6 filter FORWARD meta l4proto != wesp counter'

Replace it with 253, which IANA reserves for testing and experimentation.

Fixes: fcaa99ca9e3c ("xtables-translate: Leverage stored protocol names")
Signed-off-by: Jeremy Sowden <jeremy@xxxxxxxxxx>
---
 extensions/generic.txlate | 16 ++++++++--------
 1 file changed, 8 insertions(+), 8 deletions(-)

diff --git a/extensions/generic.txlate b/extensions/generic.txlate
index 9ad1266dc623..64bc59a8611e 100644
--- a/extensions/generic.txlate
+++ b/extensions/generic.txlate
@@ -76,17 +76,17 @@ nft 'add rule ip filter FORWARD ip protocol != sctp counter'
 ip6tables-translate -A FORWARD ! -p 132
 nft 'add rule ip6 filter FORWARD meta l4proto != sctp counter'
 
-iptables-translate -A FORWARD -p 141
-nft 'add rule ip filter FORWARD ip protocol 141 counter'
+iptables-translate -A FORWARD -p 253
+nft 'add rule ip filter FORWARD ip protocol 253 counter'
 
-ip6tables-translate -A FORWARD -p 141
-nft 'add rule ip6 filter FORWARD meta l4proto 141 counter'
+ip6tables-translate -A FORWARD -p 253
+nft 'add rule ip6 filter FORWARD meta l4proto 253 counter'
 
-iptables-translate -A FORWARD ! -p 141
-nft 'add rule ip filter FORWARD ip protocol != 141 counter'
+iptables-translate -A FORWARD ! -p 253
+nft 'add rule ip filter FORWARD ip protocol != 253 counter'
 
-ip6tables-translate -A FORWARD ! -p 141
-nft 'add rule ip6 filter FORWARD meta l4proto != 141 counter'
+ip6tables-translate -A FORWARD ! -p 253
+nft 'add rule ip6 filter FORWARD meta l4proto != 253 counter'
 
 iptables-translate -A FORWARD -m tcp --dport 22 -p tcp
 nft 'add rule ip filter FORWARD tcp dport 22 counter'
-- 
2.45.2