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gnrc_ipv6: correctly reset from temporary variable

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While `tmp` in the loop for write-protection for the check-sum
calculation is used to check the return value of
`gnrc_pktbuf_start_write()`, it was never overwriting `payload` causing
the original snip to be used in the following iteration `prev` when
duplicated, and destroying the sanity of `ipv6`.
This commit is contained in:
Martine Lenders 2018-08-02 15:17:40 +02:00
parent 72e9b1f623
commit cb4f6a96a8
1 changed files with 1 additions and 0 deletions
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1
sys/net/gnrc/network_layer/ipv6/gnrc_ipv6.c
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@ -437,6 +437,7 @@ static int _fill_ipv6_hdr(gnrc_netif_t *netif, gnrc_pktsnip_t *ipv6)
* original packet by other subscriber */ * original packet by other subscriber */
return -ENOMEM; return -ENOMEM;
} }
payload = tmp;
prev->next = payload; prev->next = payload;
prev = payload; prev = payload;
} while (_is_ipv6_hdr(payload)); } while (_is_ipv6_hdr(payload));