fix: allow bypass single ip address

cmd/config/decode.go

@@ -57,9 +57,9 @@ func decodeDns(rawConfig *RawConfig, config *Config) {
 
 func decodeBypass(rawConfig *RawConfig, config *Config) {
     for _, address := range rawConfig.Network.ByPass { // bypass options
-        if common.IsIPv4(address, true) {
+        if common.IsIPv4(address, true) || common.IsIPv4(address, false) {
             config.IPv4.Bypass = append(config.IPv4.Bypass, address)
-        } else if common.IsIPv6(address, true) {
+        } else if common.IsIPv6(address, true) || common.IsIPv6(address, false) {
             config.IPv6.Bypass = append(config.IPv6.Bypass, address)
         } else {
             log.Panicf("Invalid bypass CIDR -> %s", address)

cmd/network/tproxy.go

@@ -13,8 +13,8 @@ func loadV4TProxy(v4 *Config, v4SysCidr []string) {
     run("ip", "-4", "route", "add", "local", "0.0.0.0/0", "dev", "lo", "table", tableNum)
     run("iptables", "-t", "mangle", "-N", "XPROXY")
     log.Infof("Setting up IPv4 bypass CIDR -> %v", v4Bypass)
-    for _, cidr := range v4Bypass {
-        run("iptables", "-t", "mangle", "-A", "XPROXY", "-d", cidr, "-j", "RETURN")
+    for _, bypass := range v4Bypass {
+        run("iptables", "-t", "mangle", "-A", "XPROXY", "-d", bypass, "-j", "RETURN")
     }
     run("iptables", "-t", "mangle", "-A", "XPROXY",
         "-p", "tcp", "-j", "TPROXY", "--on-port", strconv.Itoa(v4.TProxyPort), "--tproxy-mark", "1")
@@ -31,8 +31,8 @@ func loadV6TProxy(v6 *Config, v6SysCidr []string) {
     run("ip", "-6", "route", "add", "local", "::/0", "dev", "lo", "table", tableNum)
     run("ip6tables", "-t", "mangle", "-N", "XPROXY6")
     log.Infof("Setting up IPv6 bypass CIDR -> %v", v6Bypass)
-    for _, cidr := range v6Bypass {
-        run("ip6tables", "-t", "mangle", "-A", "XPROXY6", "-d", cidr, "-j", "RETURN")
+    for _, bypass := range v6Bypass {
+        run("ip6tables", "-t", "mangle", "-A", "XPROXY6", "-d", bypass, "-j", "RETURN")
     }
     run("ip6tables", "-t", "mangle", "-A", "XPROXY6",
         "-p", "tcp", "-j", "TPROXY", "--on-port", strconv.Itoa(v6.TProxyPort), "--tproxy-mark", "1")