diff --git a/Cargo.toml b/Cargo.toml
index 139af4d..bf252ac 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -25,9 +25,9 @@ indexmap = { version = "2.14.0", features = ["serde"] }
 log = { version = "0.4.29", features = ["std"] }
 nix = { version = "0.31.3", features = ["feature", "sched"] }
 rtnetlink = { git = "https://github.com/rust-netlink/rtnetlink" }
+rmsd_yaml = "0.1"
 serde = { version = "1.0", default-features = false, features = ["derive"] }
 serde_json = "1.0.140"
-serde_yaml = "0.9.34"
 tokio = { version = "1.30", features = ["rt", "net", "time", "macros"] }
 
 [dev-dependencies]
diff --git a/TODO.md b/TODO.md
new file mode 100644
index 0000000..f5f5c03
--- /dev/null
+++ b/TODO.md
@@ -0,0 +1,44 @@
+# TODO
+
+## `ip route`
+
+- add/del/change/replace/append/prepend: support metric options (`mtu`,
+  `advmss`, `rtt`, `rttvar`, `reordering`, `window`, `cwnd`, `initcwnd`,
+  `initrwnd`, `ssthresh`, `hoplimit`, `rto_min`, `features`, `quickack`,
+  `congctl`, `fastopen_no_cookie`, `realms`, `as`) — `src/ip/route/add.rs`
+- add/del/change/replace/append/prepend: support multipath (`nexthop ...`,
+  `weight`), `nhid ID`, and the `pervasive` next-hop flag —
+  `src/ip/route/add.rs`, `src/ip/route/modify.rs`
+- add/del/change/replace/append/prepend: support `tos TOS` and
+  `ttl-propagate` in NODE_SPEC
+- add/del/change/replace/append/prepend: support `encap`
+  (`mpls | ip | ip6 | seg6 | seg6local | rpl | ioam6 | xfrm`)
+- add/del/change/replace/append/prepend: accept TIME values with `s`/`ms`
+  suffix (e.g. `expires 300s`)
+- get: support `vrf NAME` and `as ADDRESS` — `src/ip/route/get.rs`
+- show/flush selectors: support `root PREFIX`, `match PREFIX`,
+  `exact PREFIX`, and `vrf NAME` — `src/ip/route/show.rs`
+  (`RouteShowFilter::parse`)
+- show: display metrics, `expires`, `nhid`, `encap`, `realms`,
+  `ipproto`/`sport`/`dport`/`flowlabel`; populate `ttl_propagate` from the
+  dump — `src/ip/route/show.rs` (`parse_nl_msg_to_route`)
+- tests: add coverage for the above (`tests/ip_route*.rs`)
+
+## `ip link`
+
+- show: implement `-o`/`--oneline` output — `src/ip/link/show.rs` (also
+  applies to address/neighbour/route show)
+- show: implement `-s`/`--stats` RX/TX statistics output —
+  `src/ip/link/show.rs`
+- add/set: audit per-type options against `ip link add type <TYPE> help`
+  (candidates: vxlan, bond, bridge)
+
+## `ip address`
+
+- show: implement `-o`/`--oneline` output — `src/ip/address/show.rs`
+- show: implement `-s`/`--stats` RX/TX statistics output —
+  `src/ip/address/show.rs`
+- show: accept the `-br` short flag (brief output works via `--brief`, but
+  `-br` is rejected by clap) — `src/ip/main.rs`
+- show: format unknown numeric address protocols like iproute2 (`proto 0x63`,
+  not `proto 99`) — `src/ip/address/show.rs`
diff --git a/src/result.rs b/src/result.rs
index ce7fbea..df7d41b 100644
--- a/src/result.rs
+++ b/src/result.rs
@@ -12,7 +12,7 @@ pub trait CanDisplay: serde::Serialize + Sized {
     }
 
     fn to_yaml_string(&self) -> String {
-        serde_yaml::to_string(self).expect("Failed to generate JSON string")
+        rmsd_yaml::to_string(self).expect("Failed to generate YAML string")
     }
 }