From 943df4cb6039072cbc2eb66c02311b6244bd1e95 Mon Sep 17 00:00:00 2001
From: Satoshi Togawa <taikoyaP@users.noreply.github.com>
Date: Thu, 30 Jun 2022 11:13:15 +0900
Subject: [PATCH] pppd: Fix PAP Request packet.

---
 netutils/pppd/pap.c | 18 ++++++++++++++----
 1 file changed, 14 insertions(+), 4 deletions(-)

diff --git a/netutils/pppd/pap.c b/netutils/pppd/pap.c
index 081c1afa2..4ee7dd5c7 100644
--- a/netutils/pppd/pap.c
+++ b/netutils/pppd/pap.c
@@ -137,7 +137,8 @@ void pap_task(FAR struct ppp_context_s *ctx, FAR uint8_t * buffer)
   if (!(ctx->pap_state & PAP_TX_UP) && !(ctx->pap_state & PAP_TX_TIMEOUT))
     {
       /* Do we need to send a PAP auth packet? Check if we have a request
-       * pending */
+       * pending.
+       */
 
       if ((ppp_arch_clock_seconds() - ctx->pap_prev_seconds) > PAP_TIMEOUT)
         {
@@ -159,16 +160,25 @@ void pap_task(FAR struct ppp_context_s *ctx, FAR uint8_t * buffer)
 
           /* Write options */
 
+          /* Write peer-ID length */
+
           t = strlen((char *)ctx->settings->pap_username);
-
-          /* Write peer length */
-
           *bptr++ = (uint8_t)t;
+
+          /* Write peer-ID */
+
           bptr = memcpy(bptr, ctx->settings->pap_username, t);
+          bptr += t;
+
+          /* Write passwd length */
 
           t = strlen((char *)ctx->settings->pap_password);
           *bptr++ = (uint8_t)t;
+
+          /* Write passwd */
+
           bptr = memcpy(bptr, ctx->settings->pap_password, t);
+          bptr += t;
 
           /* Write length */