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-rw-r--r--iptables/nft.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/iptables/nft.c b/iptables/nft.c
index 60b0531f..c1b8ba3a 100644
--- a/iptables/nft.c
+++ b/iptables/nft.c
@@ -1726,6 +1726,11 @@ int nft_chain_user_add(struct nft_handle *h, const char *chain, const char *tabl
if (nft_xtables_config_load(h, XTABLES_CONFIG_DEFAULT, 0) < 0)
nft_xt_builtin_init(h, table);
+ if (nft_chain_exists(h, table, chain)) {
+ errno = EEXIST;
+ return 0;
+ }
+
c = nftnl_chain_alloc();
if (c == NULL)
return 0;