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Split listening port argument at the rightmost colon, allows binding to
specific IPv6 addresses. From OpenWRT, https://dev.openwrt.org/browser/trunk/package/dropbear/patches/300-ipv6_addr_port_split.patch
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@ -325,7 +325,7 @@ static void addportandaddress(char* spec) {
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myspec = m_strdup(spec);
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myspec = m_strdup(spec);
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/* search for ':', that separates address and port */
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/* search for ':', that separates address and port */
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svr_opts.ports[svr_opts.portcount] = strchr(myspec, ':');
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svr_opts.ports[svr_opts.portcount] = strrchr(myspec, ':');
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if (svr_opts.ports[svr_opts.portcount] == NULL) {
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if (svr_opts.ports[svr_opts.portcount] == NULL) {
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/* no ':' -> the whole string specifies just a port */
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/* no ':' -> the whole string specifies just a port */
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