diff --git a/src/pam_radius_auth.c b/src/pam_radius_auth.c
index be1d0ed..9002555 100644
--- a/src/pam_radius_auth.c
+++ b/src/pam_radius_auth.c
@@ -1591,6 +1591,23 @@ PAM_EXTERN int pam_sm_authenticate(pam_handle_t *pamh, UNUSED int flags, int arg
 				_pam_log(LOG_DEBUG, "Set PAM environment variable : %s", frameip);
 			}
 		}
+		if ((attr_fip = find_attribute(response, PW_FRAMED_IPV6_PREFIX))) {
+			const char name[] = "Framed-IPv6-Prefix";
+			char buffer[INET6_ADDRSTRLEN];
+			char frameip[sizeof(name) + INET6_ADDRSTRLEN];
+			struct in6_addr ip_addr;
+
+			memcpy(ip_addr.s6_addr, attr_fip->data, 16);
+
+			snprintf(frameip, sizeof(frameip), "%s=%s", name, inet_ntop(AF_INET6, (const void *)ip_addr, buffer, INET6_ADDRSTRLEN));
+			retval = pam_putenv(pamh, frameip);
+			if (retval != PAM_SUCCESS) {
+				_pam_log(LOG_ERR, "unable to set PAM environment variable : %s", name);
+			}
+			else {
+				_pam_log(LOG_DEBUG, "Set PAM environment variable : %s", frameip);
+			}
+		}
 
 	} else {
 		retval = PAM_AUTH_ERR;	/* authentication failure */
diff --git a/src/radius.h b/src/radius.h
index 287d4d8..3620203 100644
--- a/src/radius.h
+++ b/src/radius.h
@@ -123,6 +123,7 @@ typedef struct pw_auth_hdr {
 #define PW_MANAGEMENT_PRIVILEGE_LEVEL   136     /* integer */
 
 #define	PW_NAS_IPV6_ADDRESS	       	95	/* octets */
+#define	PW_FRAMED_IPV6_PREFIX	       	97	/* octets */
 
 /*
  *	INTEGER TRANSLATIONS