3 files changed, 14 insertions, 6 deletions
diff --git a/dhcpv4/option_relay_agent_information.go b/dhcpv4/option_relay_agent_information.go
index 63162a4..a338902 100644
--- a/dhcpv4/option_relay_agent_information.go
+++ b/dhcpv4/option_relay_agent_information.go
@@ -12,16 +12,16 @@ type RelayOptions struct {
 
 var relayHumanizer = OptionHumanizer{
 	ValueHumanizer: func(code OptionCode, data []byte) fmt.Stringer {
-		return OptionGeneric{data}
+		return raiSubOptionValue{data}
 	},
 	CodeHumanizer: func(c uint8) OptionCode {
-		return GenericOptionCode(c)
+		return raiSubOptionCode(c)
 	},
 }
 
 // String prints the contained options using Relay Agent-specific option code parsing.
 func (r RelayOptions) String() string {
-	return r.Options.ToString(relayHumanizer)
+	return "\n" + r.Options.ToString(relayHumanizer)
 }
 
 // FromBytes parses relay agent options from data.
@@ -37,6 +37,14 @@ func OptRelayAgentInfo(o ...Option) Option {
 	return Option{Code: OptionRelayAgentInformation, Value: RelayOptions{OptionsFromList(o...)}}
 }
 
+type raiSubOptionValue struct {
+	val []byte
+}
+
+func (rv raiSubOptionValue) String() string {
+	return fmt.Sprintf("%s (%v)", string(rv.val), rv.val)
+}
+
 type raiSubOptionCode uint8
 
 func (o raiSubOptionCode) Code() uint8 {
diff --git a/dhcpv4/option_relay_agent_information_test.go b/dhcpv4/option_relay_agent_information_test.go
index d16aedd..a875d14 100644
--- a/dhcpv4/option_relay_agent_information_test.go
+++ b/dhcpv4/option_relay_agent_information_test.go
@@ -41,7 +41,7 @@ func TestOptRelayAgentInfo(t *testing.T) {
 		1, 5, 'l', 'i', 'n', 'u', 'x',
 		2, 4, 'b', 'o', 'o', 't',
 	}
-	wantString := "Relay Agent Information:\n    unknown (1): [108 105 110 117 120]\n    unknown (2): [98 111 111 116]\n"
+	wantString := "Relay Agent Information:\n\n    Agent Circuit ID Sub-option: linux ([108 105 110 117 120])\n    Agent Remote ID Sub-option: boot ([98 111 111 116])\n"
 	require.Equal(t, wantBytes, opt.Value.ToBytes())
 	require.Equal(t, OptionRelayAgentInformation, opt.Code)
 	require.Equal(t, wantString, opt.String())
diff --git a/dhcpv4/options_test.go b/dhcpv4/options_test.go
index 3850d2d..fed2312 100644
--- a/dhcpv4/options_test.go
+++ b/dhcpv4/options_test.go
@@ -113,8 +113,8 @@ func TestParseOption(t *testing.T) {
 		},
 		{
 			code:  OptionRelayAgentInformation,
-			value: []byte{1, 4, 129, 168, 0, 1},
-			want:  "    unknown (1): [129 168 0 1]\n",
+			value: []byte{1, 12, 99, 105, 114, 99, 117, 105, 116, 45, 105, 100, 45, 49},
+			want:  "\n    Agent Circuit ID Sub-option: circuit-id-1 ([99 105 114 99 117 105 116 45 105 100 45 49])\n",
 		},
 		{
 			code:  OptionClientSystemArchitectureType,