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6rd: Clear correct IPv6 address bits in 6rdcalc

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The correct bits are now cleared in the IPv6 address as the shift
value to the correct byte in the IPv6 address was wrong. Depending
on the stack values this could result in a hanging 6rdcalc program
due to an endless loop.

Signed-off-by: Hans Dedecker <dedeckeh@gmail.com>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@38818 3c298f89-4303-0410-b956-a3cf2f4a3e73
This commit is contained in:
Steven Barth 2013-11-16 09:18:14 +00:00
parent b041af2c64
commit 1c82c32e7d
1 changed files with 1 additions and 1 deletions
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2
package/network/ipv6/6rd/src/6rdcalc.c
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@ -110,7 +110,7 @@ int main(int argc, const char **argv)
/* Clear remaining bits. */
while (v6it < 128) {
byte6 = (unsigned char *)(&v6.s6_addr) + (v6it >> 2);
byte6 = (unsigned char *)(&v6.s6_addr) + (v6it >> 3);
bit6 = 128 >> (v6it & 0x07);
*byte6 &= ~bit6;