diff --git a/man/3proxy.cfg.3 b/man/3proxy.cfg.3
index ac87e42..22f141c 100644
--- a/man/3proxy.cfg.3
+++ b/man/3proxy.cfg.3
@@ -300,6 +300,8 @@ with space and all time based elemnts are in local time zone.
   %R - Remote IP
 .br
   %r - Remote port
+.br
+  %i - Internal IP used to accept client connection
 .br
   %e - External IP used to establish connection
 .br
diff --git a/src/common.c b/src/common.c
index 9550393..854f5b2 100644
--- a/src/common.c
+++ b/src/common.c
@@ -502,6 +502,9 @@ int dobuf2(struct clientparam * param, unsigned char * buf, const unsigned char
 				case 'e':
 				 i += myinet_ntop(*SAFAMILY(&param->sinsl), SAADDR(&param->sinsl), (char *)buf + i, 64);
 				 break;
+				case 'i':
+				 i += myinet_ntop(*SAFAMILY(&param->sincl), SAADDR(&param->sinsl), (char *)buf + i, 64);
+				 break;
 				case 'C':
 				 i += myinet_ntop(*SAFAMILY(&param->sincr), SAADDR(&param->sincr), (char *)buf + i, 64);
 				 break;